diun

GitHub

Receive notifications when an image is updated on a Docker registry

4,686 stars Go #automation#discord#docker#golang#gotify#kubernetes#manifest#nomad
RAW Doc

Docker & Self-Hosted Deployment Verified OCI

Deploy diun on any server, homelab, or cloud container platform.

Index

<img src="assets/logo.png" alt="Diun" width="128px" style="display: block; margin-left: auto; margin-right: auto"/>

<p align="center">
<a href="https://github.com/crazy-max/diun/releases/latest"><img src="https://img.shields.io/github/release/crazy-max/diun.svg?style=flat-square" alt="GitHub release"></a>
<a href="https://github.com/crazy-max/diun/releases/latest"><img src="https://img.shields.io/github/downloads/crazy-max/diun/total.svg?style=flat-square" alt="Total downloads"></a>
<a href="https://github.com/crazy-max/diun/actions?workflow=build"><img src="https://img.shields.io/github/actions/workflow/status/crazy-max/diun/build.yml?branch=master&label=build&logo=github&style=flat-square" alt="Build Status"></a>
<a href="https://hub.docker.com/r/crazymax/diun/"><img src="https://img.shields.io/docker/stars/crazymax/diun.svg?style=flat-square&logo=docker" alt="Docker Stars"></a>
<a href="https://hub.docker.com/r/crazymax/diun/"><img src="https://img.shields.io/docker/pulls/crazymax/diun.svg?style=flat-square&logo=docker" alt="Docker Pulls"></a>
<br /><a href="https://codecov.io/gh/crazy-max/diun"><img src="https://img.shields.io/codecov/c/github/crazy-max/diun?logo=codecov&style=flat-square" alt="Codecov"></a>
<a href="https://github.com/sponsors/crazy-max"><img src="https://img.shields.io/badge/sponsor-crazy--max-181717.svg?logo=github&style=flat-square" alt="Become a sponsor"></a>
<a href="https://www.paypal.me/crazyws"><img src="https://img.shields.io/badge/donate-paypal-00457c.svg?logo=paypal&style=flat-square" alt="Donate Paypal"></a>
</p>

---

What is Diun?

Docker Image Update Notifier helps you keep track of container
image updates without manually watching registries.

Diun checks your images on a schedule, detects when a tracked tag or digest has
changed, and notifies you when something new is available. That makes it useful
for staying on top of upstream base image rebuilds, application releases, and
other image changes that can otherwise slip by unnoticed.

You can run Diun as a single executable
or as a Docker image, point it at the container sources you
care about, and send notifications to the messaging services your team already
uses.

Features

* Watch container images and report when tags or digests change
* Track repositories with include and exclude filters for tags
* Run checks on a schedule without needing an external cron job
* Discover images from Docker, Containerd,
Kubernetes, Swarm, Nomad,
Dockerfile, and File providers
* Override target image OS and architecture when needed
* Send notifications through Gotify, Mail, Slack, Telegram, and more
* Integrate with Healthchecks to monitor the watcher itself
* Use detailed logging to understand checks, updates, and delivery status
* Run as a single binary or with the official
Docker image

License

This project is licensed under the terms of the MIT license.

---

Contributing

Contributing

Hi there! I'm thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.

Contributions to this project are released
to the public under the project's open source license.

Submitting a pull request

1. Fork and clone the repository
2. Configure and install the dependencies: go mod download
3. Create a new branch: git checkout -b my-branch-name
4. Make your changes
5. Validate: docker buildx bake validate
6. Test your code: docker buildx bake test
7. Build the project: docker buildx bake artifact-all image-all
8. Push to your fork and submit a pull request
9. Pat your self on the back and wait for your pull request to be reviewed and merged.

Here are a few things you can do that will increase the likelihood of your pull request being accepted:

* Make sure the README.md and any other relevant documentation are kept up-to-date.
* I try to follow SemVer v2.0.0. Randomly breaking public APIs is not an option.
* Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as separate pull requests.
* Write a good commit message.

Documentation

If you want to contribute to the documentation you can test its rendering locally with the following commands:

shell
Build mkdocs image

docker build -t mkdocs -f ./hack/docs.Dockerfile --target base .
Run mkdocs image and watch for changes

docker run --rm -it -p 8000:8000 -v $(pwd):/docs mkdocs
Open http://localhost:8000 on your browser

Resources

* How to Contribute to Open Source
* Using Pull Requests
* GitHub Help

---

Diun :bell: is free and open source and always will be.

All kinds of contributions are welcome! The most basic way to show your support is to
star the project, or to raise issues.

You can also support this project by becoming a sponsor on GitHub or
by making a Paypal donation to ensure this journey continues indefinitely!

---

Faq

FAQ

Timezone

By default, all interpretation and scheduling is done with your local timezone (TZ environment variable).

Cron schedule may also override the timezone to be interpreted in by providing an additional space-separated field
at the beginning of the cron spec, of the form CRON_TZ=<timezone>:

yaml
watch:
  schedule: "CRON_TZ=Asia/Tokyo 0 /6   "

Test notifications

Through the command line with:

shell
diun notif test

Or within a container:

shell
docker compose exec diun diun notif test

Docker Compose with Prometheus metrics

You can run Diun and Prometheus in the same Compose project and scrape Diun
over the internal Compose network. This avoids publishing the Diun metrics
port on the host.

Create the metrics token file without a trailing newline:

shell
mkdir -p secrets prometheus
printf '%s' 'change-me' > secrets/diun_metrics_token

Create prometheus/prometheus.yml:

yaml
global:
  scrape_interval: 30s
scrape_configs:
  - job_name: diun
    metrics_path: /metrics
    authorization:
      type: Bearer
      credentials_file: /run/secrets/diun_metrics_token
    static_configs:
      - targets:
          - diun:9090

Then use the following Compose file:

yaml
name: diun
services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    command: serve
    volumes:
      - "./data:/data"
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Paris"
      - "DIUN_WATCH_SCHEDULE=0 /6   "
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_METRICS_ENABLED=true"
      - "DIUN_METRICS_ADDR=:9090"
      - "DIUN_METRICS_PATH=/metrics"
      - "DIUN_METRICS_TOKENFILE=/run/secrets/diun_metrics_token"
    secrets:
      - diun_metrics_token
    labels:
      - "diun.enable=true"
    restart: always
  prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    command:
      - "--config.file=/etc/prometheus/prometheus.yml"
      - "--storage.tsdb.path=/prometheus"
    volumes:
      - "./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml:ro"
      - "prometheus-data:/prometheus"
    ports:
      - "127.0.0.1:9091:9090"
    secrets:
      - diun_metrics_token
    restart: always
secrets:
  diun_metrics_token:
    file: ./secrets/diun_metrics_token
volumes:
  prometheus-data:

Prometheus will scrape Diun at diun:9090, and the Prometheus UI will be
available on http://127.0.0.1:9091.

Customize the hostname

The hostname that appears in your notifications is the one associated with the
container if you use the Diun image with docker run or docker compose up -d.
By default, it's a random string like d2219b854598. To change it:

console
$ docker run --hostname "diun" ...

Or if you use Docker Compose:

yaml
services:
  diun:
    image: crazymax/diun:latest
    hostname: diun

Notification template

The title and body of a notification message can be customized for each notifier through templateTitle and
templateBody fields except for those rendering _JSON_ or _Env_ like Amqp,
MQTT, Script and Webhook.

Templating is supported with the following fields:

| Key | Description |
|---------------------------------|---------------------------------------------------------------------------------------|
| .Meta.ID | App ID: diun |
| .Meta.Name | App Name: Diun |
| .Meta.Desc | App description: Docker image update notifier |
| .Meta.URL | App repo URL: https://github.com/crazy-max/diun |
| .Meta.Logo | App logo URL: https://raw.githubusercontent.com/crazy-max/diun/master/.res/diun.png |
| .Meta.Author | App author: CrazyMax |
| .Meta.Version | App version: v4.19.0 |
| .Meta.UserAgent | App user-agent used to talk with registries: diun/4.19.0 go/1.16 Linux |
| .Meta.Hostname | Hostname |
| .Entry.Status | Entry status. Can be new, update, unchange, skip or error |
| .Entry.Provider | Provider used |
| .Entry.Image | Docker image name. e.g. docker.io/crazymax/diun:latest |
| .Entry.Image.Domain | Docker image domain. e.g. docker.io |
| .Entry.Image.Path | Docker image path. e.g. crazymax/diun |
| .Entry.Image.Tag | Docker image tag. e.g. latest |
| .Entry.Image.Digest | Docker image digest |
| .Entry.Image.HubLink | Docker image hub link (if available). e.g. https://hub.docker.com/r/crazymax/diun |
| .Entry.Manifest.Name | Manifest name. e.g. docker.io/crazymax/diun |
| .Entry.Manifest.Tag | Manifest tag. e.g. latest |
| .Entry.Manifest.MIMEType | Manifest MIME type. e.g. application/vnd.docker.distribution.manifest.list.v2+json |
| .Entry.Manifest.Digest | Manifest digest |
| .Entry.Manifest.Created | Manifest created date. e.g. 2021-06-20T12:23:56Z |
| .Entry.Manifest.DockerVersion | Version of Docker that was used to build the image. e.g. 20.10.7 |
| .Entry.Manifest.Labels | Image labels |
| .Entry.Manifest.Layers | Image layers |
| .Entry.Manifest.Platform | Platform that the image is runs on. e.g. linux/amd64 |
| .Entry.Metadata | Key-value pair of image metadata specific to each provider |

The following helper functions are also available in notification templates.
Helpers that operate on a string take the target string as their last argument,
so they can be used directly or in a pipeline.

| Function | Description | Example |
|-------------------|-----------------------------------------|--------------------------------------------------------------|
| lower | Converts a string to lower case | {{ lower .Entry.Image.Tag }} |
| upper | Converts a string to upper case | {{ upper .Entry.Image.Tag }} |
| replace | Replaces all occurrences of a substring | {{ replace "/" "-" .Entry.Image.Path }} |
| trim | Removes leading and trailing whitespace | {{ trim .Entry.Metadata.foo }} |
| trimPrefix | Removes a prefix if present | {{ trimPrefix "v" .Entry.Image.Tag }} |
| trimSuffix | Removes a suffix if present | {{ trimSuffix "-alpine" .Entry.Image.Tag }} |
| regexReplaceAll | Replaces all regular expression matches | {{ regexReplaceAll "[^a-zA-Z0-9]+" "-" .Entry.Image.Tag }} |

For example, this normalizes an image path with a pipeline:

gotemplate
{{ .Entry.Image.Path | replace "/" "-" | lower }}

Authentication against the registry

You can authenticate against the registry through the regopts settings or you can mount
your docker config file $HOME/.docker/config.json if you are already connected to the registry with docker login:

yaml
name: diun
services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    command: serve
    volumes:
      - "./data:/data"
      - "/root/.docker/config.json:/root/.docker/config.json:ro"
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Paris"
      - "DIUN_WATCH_SCHEDULE=0 /6   "
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true"
    restart: always

Run Diun behind an HTTP proxy

If Diun must reach registries or notification endpoints through a network
proxy such as Squid, configure the proxy in the Diun container environment with
the standard HTTP_PROXY, HTTPS_PROXY and NO_PROXY variables.

Host operating system proxy settings and Docker daemon proxy settings are not
automatically inherited by the Diun container. Docker daemon proxy settings
help Docker pull images, while Diun's own registry checks are made by the Diun
process running inside the container.

For example:

yaml
name: diun
services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    command: serve
    volumes:
      - "./data:/data"
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Paris"
      - "DIUN_WATCH_SCHEDULE=0 /6   "
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true"
      - "HTTP_PROXY=http://squid.local:3128"
      - "HTTPS_PROXY=http://squid.local:3128"
      - "NO_PROXY=localhost,127.0.0.1,::1"
    restart: always

Use NO_PROXY for endpoints that should be contacted directly, such as local
services, private registries available on the same network, or the Docker
daemon if it is reached over TCP.

This is different from a Docker registry caching proxy such as Nexus or Harbor.
In that case the proxy is a registry endpoint, so images should be configured
with the registry name that Diun should check.

field docker|swarm uses unsupported type: invalid

If you have the error failed to decode configuration from file: field docker uses unsupported type: invalid that's
because your docker, swarm or kubernetes provider is not initialized in your configuration:

!!! failure

yaml
providers:
      docker:

should be:

!!! success

yaml
providers:
      docker: {}

No image found in manifest list for architecture, variant, OS

If you encounter this kind of warning, you are probably using the file provider for an
image with an erroneous or empty platform. If the platform is not filled in, it will be deduced automatically from the
information of your operating system on which Diun is running.

In the example below, Diun is running (diun_x.x.x_windows_i386.zip) on Windows 10 and tries to analyze the
crazymax/cloudflared image with the detected platform (windows/386):

yaml
- name: crazymax/cloudflared:2020.2.1

But this platform is not supported by this image as you can see on DockerHub:

!!! warning
Fri, 27 Mar 2020 01:20:03 UTC WRN Cannot get remote manifest error="Cannot create image closer: Error choosing image instance: no image found in manifest list for architecture 386, variant \"\", OS windows" image=docker.io/image=crazymax/cloudflared:2020.2.1 provider=file

You have to force the platform for this image if you are not on a supported platform:

yaml
- name: crazymax/cloudflared:2020.2.1
  platform:
    os: linux
    arch: amd64

!!! success
Fri, 27 Mar 2020 01:24:33 UTC INF New image found image=docker.io/crazymax/cloudflared:2020.2.1 provider=file

Too many requests to registry

The error Cannot create image closer: too many requests to registry is returned when the HTTP status code returned
by the registry is 429.

This can happen on the DockerHub registry because of the rate-limited anonymous pulls.

To solve this you must first be authenticated against the registry through the regopts settings:

yaml
regopts:
  - name: "docker.io"
    selector: image
    username: foo
    password: bar

If this is not enough, tweak the schedule setting with something
like 0 /6 (every 6 hours).

Docker Hub rate limits

Docker is now enforcing Docker Hub pull rate limits. This means you can
make 100 pull image requests per six hours for anonymous usage, and 200 pull image requests per six hours
for free Docker accounts. But this rate limit is not necessarily an indicator on the number of times an image has
actually been downloaded. In fact, their _pulls_ counter/metric is actually a representation of the number of times a
manifest for a particular image has been retrieved.

As you probably know, Diun downloads the manifest of an image from its registry through a GET request to be able to
retrieve its inside metadata. Fortunately Diun doesn't perform a GET request at each scan but only when an image
has been updated or added on the registry. This allows us not to exceed this rate limit in our situation, but
it also strongly depends on the number of images you scan. To increase your pull rate limits you can upgrade
your account to a Docker Pro or Team subscription and authenticate against the
registry through the regopts settings:

yaml
regopts:
  - name: "docker.io"
    selector: image
    username: foo
    password: bar

Or you can tweak the schedule setting with something like 0 /6 (every 6 hours).

!!! warning
Also be careful with the watch_repo setting as it will fetch manifest for ALL tags available for the image.

Tags sorting when using watch_repo

When you use the watch_repo setting, Diun will fetch all tags available for
the image. Depending on the registry, order of the tags list can change.

You can use the sort_tags setting available for each provider to use a
specific sorting method for the tags list.

* default: do not sort and use the expected tags list from the registry
* reverse: reverse order for the tags list from the registry
* lexicographical: sort the tags list lexicographically
* semver: sort the tags list using semantic versioning

Given the following list of tags received from the registry:

json
[
  "0.1.0",
  "0.4.0",
  "3.0.0-beta.1",
  "3.0.0-beta.4",
  "4",
  "4.0.0",
  "4.0.0-beta.1",
  "4.1.0",
  "4.1.1",
  "4.10.0",
  "4.11.0",
  "4.20",
  "4.20.0",
  "4.20.1",
  "4.3.0",
  "4.3.1",
  "4.9.0",
  "edge",
  "latest"
]

Here is the result for reverse:

json
[
  "latest",
  "edge",
  "4.9.0",
  "4.3.1",
  "4.3.0",
  "4.20.1",
  "4.20.0",
  "4.20",
  "4.11.0",
  "4.10.0",
  "4.1.1",
  "4.1.0",
  "4.0.0-beta.1",
  "4.0.0",
  "4",
  "3.0.0-beta.4",
  "3.0.0-beta.1",
  "0.4.0",
  "0.1.0"
]

And for semver:

json
[
  "4.20.1",
  "4.20.0",
  "4.20",
  "4.11.0",
  "4.10.0",
  "4.9.0",
  "4.3.1",
  "4.3.0",
  "4.1.1",
  "4.1.0",
  "4.0.0",
  "4",
  "4.0.0-beta.1",
  "3.0.0-beta.4",
  "3.0.0-beta.1",
  "0.4.0",
  "0.1.0",
  "edge",
  "latest"
]

Custom CA certificates for notification endpoints

If your notification endpoint (e.g. Gotify, Ntfy, Telegram, Webhook, etc.) is
using a self-signed certificate or a certificate issued by a private CA, you
can provide the CA certificate to Diun through the tlsCaCertFiles setting:

yaml
notif:
  gotify:
    endpoint: https://gotify.foo.com
    token: Token123456
    tlsCaCertFiles:
      - /certs/ca-gotify.crt

Then mount the certificate file in the container:

yaml
name: diun
services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    command: serve
    volumes:
      - "./data:/data"
      - "/etc/ssl/certs/ca-gotify.crt:/certs/ca-gotify.crt:ro"
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Paris"
      - "DIUN_WATCH_SCHEDULE=0 /6   "
      - "DIUN_PROVIDERS_DOCKER=true"
      - "DIUN_PROVIDERS_DOCKER_WATCHBYDEFAULT=true"
    restart: always

Profiling

Diun provides a simple way to manage runtime/pprof profiling through the
--profiler-path and --profiler flags with serve command:

yaml
name: diun
services:
  diun:
    image: crazymax/diun:latest
    container_name: diun
    command: serve
    volumes:
      - "./data:/data"
      - "./profiler:/profiler"
      - "/var/run/docker.sock:/var/run/docker.sock"
    environment:
      - "TZ=Europe/Paris"
      - "LOG_LEVEL=info"
      - "PROFILER_PATH=/profiler"
      - "PROFILER=mem"
      - "DIUN_PROVIDERS_DOCKER=true"
    restart: always

The following profilers are available:

* cpu enables cpu profiling
* mem enables memory profiling
* alloc enables memory profiling and changes which type of memory to profile allocations
* heap enables memory profiling and changes which type of memory profiling to profile the heap
* routines enables goroutine profiling
* mutex enables mutex profiling
* threads enables thread creation profiling
* block enables block (contention) profiling

Image with digest and image:tag@digest format

Analysis of an image with a digest but without tag will be done using latest
as a tag which could lead to false positives.

For example crazymax/diun@sha256:fa80af32a7c61128ffda667344547805b3c5e7721ecbbafd70e35bb7bb7c989f
is referring to crazymax/diun:4.24.0 tag, so it's not correct to assume that
we want to analyze crazymax/diun:latest.

You can still pin an image to a specific digest and analyze the image if the
tag is specified using the image:tag@digest format. Taking the previous
example if we specify crazymax/diun:4.24.0@sha256:fa80af32a7c61128ffda667344547805b3c5e7721ecbbafd70e35bb7bb7c989f,
then crazymax/diun:4.24.0 will be analyzed.

Secrets loaded from files and trailing newlines

When Diun reads a secret from a file (e.g. Docker or Kubernetes secrets), the
file content is used exactly as-is, including any trailing newline characters.

This is intentional.

A secret file is treated as an opaque value, not as a line of text.
Automatically trimming or normalizing file content would silently modify the
secret and could cause authentication or integration issues. Diun therefore
does not attempt to guess whether a trailing newline was added intentionally or
by tooling.

This behavior aligns with common secret-management systems (such as Kubernetes
and Vault), which model secrets as arbitrary data rather than text strings.

If a trailing newline is not desired, ensure the file is created without one,
for example:

shell
printf '%s' 'mysecret' > secret.txt

Any future trimming or text-normalization behavior would be introduced
explicitly and opt-in.

---

Reporting Issue

Reporting an issue

Before submitting an issue

First, be respectful.

Please do a search in open issues to see if the issue or feature request has already been filed and read the FAQ page first.

If you find your issue already exists, make relevant comments and add your reaction. Use a reaction in place of a "+1" comment.

:+1: - upvote

:-1: - downvote

If you cannot find an existing issue that describes your bug or feature, submit an issue using the guidelines below.

Writing good bug reports and feature requests

File a single issue per problem and feature request.

* Do not enumerate multiple bugs or feature requests in the same issue.
* Do not add your issue as a comment to an existing issue unless it's for the identical input. Many issues look similar, but have different causes.

The more information you can provide, the more likely someone will be successful reproducing the issue and finding a fix.

You are now ready to create a new issue!

Closure policy

* Issues that don't have the information requested above (when applicable) will be closed immediately and the poster directed to the support guidelines.
* Issues that go a week without a response from original poster are subject to closure at our discretion.

---

Mkdocs.Yml

site_name: Diun
site_description: Receive notifications when a Docker image is updated on a Docker registry
site_author: CrazyMax
site_url: https://crazymax.dev/diun/
edit_uri: edit/master/docs/
docs_dir: docs

repo_name: crazy-max/diun
repo_url: https://github.com/crazy-max/diun

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- icon: fontawesome/brands/twitter
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plausible:
server: plausible.re4per.com
domain: crazymax.dev/diun
template:
notif:
defaultTitle: |
{{ .Entry.Image }} {{ if (eq .Entry.Status "new") }}is available{{ else }}has been updated{{ end }}
defaultBody: |
Docker tag {{ if .Entry.Image.HubLink }}{{ .Entry.Image }}{{ else }}{{ .Entry.Image }}{{ end }} which you subscribed to through {{ .Entry.Provider }} provider {{ if (eq .Entry.Status "new") }}is available{{ else }}has been updated{{ end }} on {{ .Entry.Image.Domain }} registry (triggered by {{ .Meta.Hostname }} host).

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links: true
links_attr_map:
target: _blank
links_noopener: true
- exclude:
glob:
- "_overrides/*"
- git-revision-date-localized:
type: iso_datetime
enable_creation_date: true
fallback_to_build_date: true
- macros:
j2_block_start_string: '[[%'
j2_block_end_string: '%]]'
j2_variable_start_string: '[['
j2_variable_end_string: ']]'
module_name: hack/mkdocs_macros
- search:
lang:
- en

nav:
- Home: index.md
- Installation:
- From Docker image: install/docker.md
- From binary: install/binary.md
- Linux service: install/linux-service.md
- Usage:
- Command line: usage/command-line.md
- Basic example: usage/basic-example.md
- Configuration:
- Overview: config/index.md
- .db: config/db.md
- .watch: config/watch.md
- .defaults: config/defaults.md
- .metrics: config/metrics.md
- .notif: config/notif.md
- .regopts: config/regopts.md
- .providers: config/providers.md
- Notifications:
- Amqp: notif/amqp.md
- Apprise: notif/apprise.md
- Discord: notif/discord.md
- Elasticsearch: notif/elasticsearch.md
- Gotify: notif/gotify.md
- Mail: notif/mail.md
- Matrix: notif/matrix.md
- MQTT: notif/mqtt.md
- Ntfy: notif/ntfy.md
- Pushover: notif/pushover.md
- Rocket.Chat: notif/rocketchat.md
- Script: notif/script.md
- Signal (REST API): notif/signalrest.md
- Slack: notif/slack.md
- Teams: notif/teams.md
- Telegram: notif/telegram.md
- Webhook: notif/webhook.md
- Providers:
- Docker: providers/docker.md
- Containerd: providers/containerd.md
- Kubernetes: providers/kubernetes.md
- Swarm: providers/swarm.md
- Nomad: providers/nomad.md
- Dockerfile: providers/dockerfile.md
- File: providers/file.md
- User guides:
- Blog posts: user-guides/blog-posts.md
- Docker + File providers: user-guides/docker-file-providers.md
- FAQ: faq.md
- Changelog: changelog.md
- Migration:
- Diun v4.1 to v4.29: migration/v4.1-to-v4.29.md
- Diun v4.0 to v4.17: migration/v4.0-to-v4.17.md
- Diun v3 to v4: migration/v3-to-v4.md
- Diun v2 to v3: migration/v2-to-v3.md
- Diun v1 to v2: migration/v1-to-v2.md
- Diun v0 to v1: migration/v0-to-v1.md
- Reporting an issue: reporting-issue.md
- Contributing: contributing.md
- Donate: donate.md

---

CHANGELOG

Changelog

4.33.0 (2026/05/30)

* Diun now exposes a container healthcheck command by @crazy-max in #1758 #1759
* New containerd provider by @crazy-max in #1754
* Support multiple Nomad namespaces by @crazy-max in #1755
* Added proxy support for HTTP notifiers by @crazy-max in #1751
* Added Teams workflow webhook card support by @crazy-max in #1757
* Skip generated artifact tags during registry checks by @crazy-max in #1745
* Skip non-image artifacts during registry checks by @crazy-max in #1746
* Fix mail notifications with strict SMTP relays by @crazy-max in #1753
* Document global proxy configuration by @crazy-max in #1752
* Preserve logrus fields in zerolog output by @crazy-max in #1749

Full Changelog: https://github.com/crazy-max/diun/compare/v4.32.0...v4.33.0

4.32.0 (2026/05/28)

* Added an optional Prometheus metrics endpoint by @crazy-max in #1744
* Added string helpers to notification templates by @crazy-max in #1743
* Signal REST API notification now supports text mode by @sonntam in #1611
* Telegram notification now supports configurable API URL for proxy support by @GSemekhin in #1660
* ntfy now supports notification icon by @crazy-max in #1714
* ntfy now supports click action by @crazy-max in #1738
* Mail notification now uses default HELO when localName is unset by @crazy-max in #1735
* Discord notification now supports retry after rate limits by @crazy-max in #1723
* Slack notification now supports retry after rate limits by @crazy-max in #1724
* Telegram notification now supports retry after rate limits by @crazy-max in #1725
* Matrix notification now supports retry after rate limits by @crazy-max in #1726
* Teams notification now supports retry after rate limits by @crazy-max in #1731
* Webhook notification now fails on unexpected status by @crazy-max in #1722
* UUID as secret is now supported for healtchecks by @crazy-max in #1737
* Handle database manifest entries consistently by @crazy-max in #1715
* Log startup config as structured debug field by @crazy-max in #1648
* Simplify shutdown lifecycle by @crazy-max in #1704
* Simplify provider job iteration by @crazy-max in #1706
* Modernize config defaults and remove obsolete util helpers by @crazy-max in #1705
* Fix webhook notification where HTTP method would not be correctly propagated by @crazy-max in #1630
* Fix notification HTML paragraph trimming by @crazy-max in #1716
* Go 1.26 by @crazy-max in #1695
* MkDocs Materials 9.7.5 by @crazy-max in #1676
* Migrate github.com/docker/docker to github.com/moby/moby by @crazy-max in #1601
* Migrate github.com/go-gomail/gomail to github.com/wneessen/go-mail 0.7.3 by @crazy-max in #1732 #1733 #1734
* Bump filippo.io/edwards25519 to 1.1.1 in #1616
* Bump github.com/PaulSonOfLars/gotgbot/v2 to 2.0.0-rc.35 in #1618 #1742
* Bump github.com/alecthomas/kong to 1.15.0 in #1603 #1671
* Bump github.com/bmatcuk/doublestar/v4 to 4.10.0 in #1719
* Bump github.com/crazy-max/gohealthchecks to 0.6.0 in #1587
* Bump github.com/crazy-max/gonfig to 0.8.0 in #1668
* Bump github.com/docker/go-connections to 0.7.0 in #1685
* Bump github.com/dromara/carbon/v2 to 2.6.16 in #1595
* Bump github.com/go-playground/validator/v10 to 10.30.2 in #1585 #1675
* Bump github.com/hashicorp/nomad/api to 2.0.2 in #1717
* Bump github.com/jedib0t/go-pretty/v6 to 6.7.10 in #1669 #1691
* Bump github.com/moby/buildkit to 0.30.0 in #1596 #1672 #1707
* Bump github.com/panjf2000/ants/v2 to 2.12.1 in #1586 #1604 #1646 #1741
* Bump github.com/rabbitmq/amqp091-go to 1.11.0 in #1688
* Bump github.com/rs/zerolog to 1.35.1 in #1658 #1689
* Bump go.podman.io/image/v5 to 5.40.0 in #1600 #1670 #1601
* Bump golang.org/x/mod to 0.36.0 in #1606 #1635 #1673 #1712
* Bump golang.org/x/sys to 0.45.0 in #1591 #1602 #1666 #1699 #1711
* Bump google.golang.org/grpc to 1.81.1 in #1643 #1667 #1708
* Bump gopkg.in/yaml.v3 to 3.0.1 in #1720
* Bump k8s.io/client-go to 0.35.3 in #1607 #1631 #1644
* Bump maunium.net/go/mautrix to 0.28.0 in #1613 #1641 #1710

Full Changelog: https://github.com/crazy-max/diun/compare/v4.31.0...v4.32.0

4.31.0 (2025/12/24)

* Support for negating namespaces with Kubernetes provider by @crazy-max in #1582
* Support new Matrix servers for Matrix notifications by @artgpz, @sreinwald in #1529 #1551
* Use X-Gotify-Key header to send token for Gotify by @crazy-max in #1530
* Add RFC 5322 compliant Message-ID header to email notifications by @tkaufmann in #1557
* Add renderEmbeds option for Discord notifications by @crazy-max in #1580
* Go 1.25 by @crazy-max in #1573
* Alpine Linux 3.23 by @crazy-max in #1572
* MkDocs Material 9.6.20 by @crazy-max in #1509
* Bump github.com/alecthomas/kong to 1.13.0 in #1545
* Bump github.com/containerd/platforms to 1.0.0-rc.2 in #1533
* Bump github.com/docker/docker to 28.5.2+incompatible in #1517
* Bump github.com/dromara/carbon/v2 to 2.6.15 in #1526 #1546
* Bump github.com/eclipse/paho.mqtt.golang to 1.5.1 in #1504
* Bump github.com/go-playground/validator/v10 to 10.30.0 in #1513 #1576
* Bump github.com/hashicorp/nomad/api to 1.11.1 by @crazy-max in #1579
* Bump github.com/jedib0t/go-pretty/v6 to 6.7.8 in #1569 #1583
* Bump github.com/moby/buildkit to 0.25.3 in #1516 #1566
* Bump go.podman.io/image/v5 to 5.38.0 by @crazy-max in #1502 #1535
* Bump golang.org/x/mod to 0.30.0 in #1540
* Bump google.golang.org/grpc to 1.78.0 in #1565 #1584
* Bump google.golang.org/grpc/cmd/protoc-gen-go-grpc to 1.6.0 in #1577
* Bump google.golang.org/protobuf to 1.36.11 in #1564
* Bump k8s.io/client-go to 0.34.1 in #1501
* Bump maunium.net/go/mautrix to 0.26.1 in #1567

Full Changelog: https://github.com/crazy-max/diun/compare/v4.30.0...v4.31.0

4.30.0 (2025/08/31)

* Add TLS config options tlsSkipVerify and tlsCaCertFiles for all notifiers using an HTTP client by @crazy-max in #1489
* Apprise notifications support by @privacyfr3ak in #1457
* Elasticsearch notifications support by @robin-moser in #1452
* Add disableNotification option for Telegram by @imrebuild in #1354
* Switch from third-party module to HTTP client for Pushover by @crazy-max in #1490
* Align chatIDs and chatIDsFile format handling for Telegram by @crazy-max in #1316
* Switch from github.com/hako/durafmt to github.com/dromara/carbon module by @crazy-max in #1317
* Remove unneeded openssl package in the Docker image by @crazy-max in #1488
* Go 1.24 by @crazy-max in #1461
* Alpine Linux 3.22 by @crazy-max in #1462
* Bump dario.cat/mergo to 1.0.2 in #1436
* Bump github.com/PaulSonOfLars/gotgbot/v2 to 2.0.0-rc.33 in #1397 #1448
* Bump github.com/alecthomas/kong to 1.12.1 in #1324 #1456
* Bump github.com/containers/image/v5 to 5.36.1 in #1340 #1454 #1467
* Bump github.com/crazy-max/gohealthchecks to 0.5.0 in #1319
* Bump github.com/docker/docker to 28.3.3+incompatible in #1458
* Bump github.com/docker/go-connections to 0.6.0 in #1470
* Bump github.com/dromara/carbon/v2 to 2.6.11 in #1435 #1455
* Bump github.com/go-playground/validator/v10 to 10.27.0 in #1333 #1432 #1446
* Bump github.com/hashicorp/nomad/api to 1.10.4 by @crazy-max in #1487
* Bump github.com/jedib0t/go-pretty/v6 to 6.6.8 in #1430 #1466
* Bump github.com/moby/buildkit to 0.23.2 in #1445
* Bump github.com/opencontainers/image-spec to 1.1.1 in #1434
* Bump github.com/panjf2000/ants/v2 to 2.11.3 in #1331 #1433
* Bump github.com/rs/zerolog to 1.34.0 in #1431
* Bump github.com/stretchr/testify to 1.11.1 in #1482
* Bump go.etcd.io/bbolt to 1.4.3 in #1361 #1444 #1477
* Bump golang.org/x/crypto to 0.35.0 in #1398
* Bump golang.org/x/mod to 0.27.0 in #1377 #1450 #1469
* Bump golang.org/x/net to 0.38.0 in #1343 #1402
* Bump golang.org/x/sys to 0.35.0 in #1323 #1427 #1472
* Bump google.golang.org/grpc to 1.74.2 in #1407 #1465
* Bump google.golang.org/protobuf to 1.36.8 in #1389 #1471 #1479
* Bump k8s.io/client-go to 0.32.1 in #1338 #1453

Full Changelog: https://github.com/crazy-max/diun/compare/v4.29.0...v4.30.0

4.29.0 (2024/12/19)

:warning: See Migration notes in the documentation before upgrading.

* Topics support for Telegram notifications by @crazy-max in #1308
* Webhook url as secret support for Discord, Slack and Teams notifications by @crazy-max in #1302
* Enhance error message for JSON decode response issues for Gotify, ntfy and RocketChat by @crazy-max in #1309
* Fix TLS configuration handling for Nomad provider by @IamTheFij in #1178
* Go 1.23 by @crazy-max in #1286
* Alpine Linux 3.21 by @crazy-max in #1286
* Switch to github.com/containerd/platforms v0.2.1 by @crazy-max in #1287
* Switch to github.com/rabbitmq/amqp091-go v1.10.0 by @crazy-max in #1288
* Bump dario.cat/mergo to 1.0.1 by @crazy-max in #1301
* Bump github.com/PaulSonOfLars/gotgbot/v2 to 2.0.0-rc.30 in #1185 #1278
* Bump github.com/alecthomas/kong to 1.6.0 in #1298
* Bump github.com/containers/image/v5 to 5.33.0 by @crazy-max in #1274 #1284
* Bump github.com/distribution/reference to 0.6.0 in #1183
* Bump github.com/docker/docker to 27.3.1+incompatible by @crazy-max in #1181 #1275 #1291
* Bump github.com/eclipse/paho.mqtt.golang to 1.5.0 in #1299
* Bump github.com/go-playground/validator/v10 to 10.23.0 in #1179 #1191 #1297
* Bump github.com/gregdel/pushover to 1.3.1 in #1164
* Bump github.com/jedib0t/go-pretty/v6 to 6.6.5 in #1167 #1300
* Bump github.com/microcosm-cc/bluemonday to 1.0.27 in #1294
* Bump github.com/moby/buildkit to 0.17.3 by @crazy-max in #1160 #1312
* Bump github.com/panjf2000/ants/v2 to 2.10.0 in #1198
* Bump github.com/rs/zerolog to 1.33.0 in #1186
* Bump github.com/stretchr/testify to 1.10.0 in #1295
* Bump go.etcd.io/bbolt to 1.3.11 by @crazy-max in #1187 #1292
* Bump golang.org/x/crypto to 0.31.0 in #1271
* Bump golang.org/x/mod to 0.22.0 in #1188 #1296
* Bump golang.org/x/net to 0.23.0 in #1157
* Bump golang.org/x/sys to 0.25.0 in #1184 #1240
* Bump google.golang.org/grpc to 1.67.0 by @crazy-max in #1171 #1293
* Bump google.golang.org/grpc/cmd/protoc-gen-go-grpc to 1.5.1 in #1224
* Bump google.golang.org/protobuf to 1.35.2 in #1277
* Bump k8s.io/client-go to 0.32.0 in #1280

Full Changelog: https://github.com/crazy-max/diun/compare/v4.28.0...v4.29.0

4.28.0 (2024/04/06)

* Add tzdata package to Docker image by @crazy-max in #1144
* Alpine Linux 3.19 by @crazy-max in #1140
* Bump github.com/jedib0t/go-pretty/v6 to 6.5.6 in #1137
* Bump github.com/panjf2000/ants/v2 to 2.9.1 in #1139
* Bump golang.org/x/mod to 0.17.0 in #1143
* Bump golang.org/x/sys to 0.19.0 in #1142
* Bump google.golang.org/grpc to 1.63.0 in #1141

Full Changelog: https://github.com/crazy-max/diun/compare/v4.27.0...v4.28.0

4.27.0 (2024/03/23)

* Sound option support for pushover by @szerencl in #996
* Fix NTFY markdown by @stecydube in #1025
* Fix global defaults for file provider by @adamantike in #1063
* Switch to github.com/PaulSonOfLars/gotgbot/v2 for Telegram API client by @jon4hz in #1135
* Go 1.21 by @IamTheFij, @crazy-max in #1026 #1050 #1058
* Generate sbom and provenance by @crazy-max in #1116
* Bump github.com/alecthomas/kong to 0.9.0 in #1041 #1118
* Bump github.com/containerd/containerd to 1.7.14 in #1047 #1124
* Bump github.com/containers/image/v5 to 5.30.0 in #1029 #1112
* Bump github.com/docker/distribution to 2.8.3+incompatible in #991
* Bump github.com/docker/docker to 25.0.5+incompatible by @crazy-max in #1120 #1134
* Bump github.com/go-playground/validator/v10 to 10.19.0 in #1020 #1109
* Bump github.com/hashicorp/nomad/api to 1.7.2 by @IamTheFij in #1049
* Bump github.com/jedib0t/go-pretty/v6 to 6.5.5 in #1012 #1083 #1126
* Bump github.com/microcosm-cc/bluemonday to 1.0.26 in #1042
* Bump github.com/moby/buildkit to 0.13.1 by @crazy-max in #1043 #1111 #1117 #1128
* Bump github.com/opencontainers/image-spec to 1.1.0 in #1100
* Bump github.com/panjf2000/ants/v2 to 2.9.0 in #1046
* Bump github.com/rs/zerolog to 1.32.0 in #989 #1121
* Bump go.etcd.io/bbolt to 1.3.9 in #1044 #1106
* Bump golang.org/x/crypto to 0.17.0 in #1060
* Bump golang.org/x/mod to 0.16.0 in #1021 #1110
* Bump golang.org/x/net to 0.17.0 in #1002
* Bump golang.org/x/sys to 0.17.0 in #1035 #1092
* Bump google.golang.org/grpc to 1.62.1 in #1048 #1061 #1113
* Bump google.golang.org/protobuf to 1.33.0 in #1064 #1119
* Bump k8s.io/client-go to 0.29.3 in #1045 #1051 #1098 #1127

Full Changelog: https://github.com/crazy-max/diun/compare/v4.26.0...v4.27.0

4.26.0 (2023/09/23)

* Global defaults support for image configuration by @IamTheFij, @crazy-max in #887 #981 #982
* image:tag@digest format support by @crazy-max in #915
* Handle analysis of images with tag and digest by @crazy-max in #968
* Fix latest for image list command by @crazy-max in #983
* Fix dead link in reporting-issue docs by @IamTheFij in #963
* Alpine Linux 3.18 by @crazy-max in #914
* Bump github.com/AlecAivazis/survey/v2 to 2.3.7 in #900
* Bump github.com/alecthomas/kong to 0.8.0 in #905
* Bump github.com/containerd/containerd to 1.7.6 in #954
* Bump github.com/containers/image/v5 to 5.26.1 in #911
* Bump github.com/docker/docker to 24.0.6+incompatible in #947
* Bump github.com/eclipse/paho.mqtt.golang to 1.4.3 in #920
* Bump github.com/go-playground/validator/v10 to 10.15.4 in #972
* Bump github.com/gregdel/pushover to 1.3.0 in #975
* Bump github.com/jedib0t/go-pretty/v6 to 6.4.7 in #971
* Bump github.com/microcosm-cc/bluemonday to 1.0.25 in #927
* Bump github.com/moby/buildkit to 0.12.2 in #940
* Bump github.com/opencontainers/image-spec to 1.1.0-rc5 in #912 #974
* Bump github.com/panjf2000/ants/v2 to 2.8.2 in #913 #922 #978
* Bump github.com/rs/zerolog to 1.30.0 in #976
* Bump github.com/streadway/amqp to 1.1.0 in #904
* Bump golang.org/x/mod to 0.12.0 in #901 #917
* Bump golang.org/x/sys to 0.12.0 in #899 #945
* Bump google.golang.org/grpc to 1.58.2 in #906 #961 #980
* Bump google.golang.org/protobuf to 1.31.0 in #908
* Bump k8s.io/client-go to 0.28.2 in #960

Full Changelog: https://github.com/crazy-max/diun/compare/v4.25.0...v4.26.0

4.25.0 (2023/06/12)

* runOnStartup watch option by @crazy-max in #895
* ntfy notification support by @blueberryapple in #787
* Authentication support for ntfy by @crazy-max in #890
* Sorting for prefixed semver by @IamTheFij in #765
* Check Nomad group meta tags by @IamTheFij in #763
* Go 1.20 by @crazy-max in #858
* Bump github.com/containerd/containerd to 1.7.2 in #757 #792 #885
* Bump github.com/containers/image/v5 to 5.25.0 in #772 #791 #796 #855
* Bump github.com/crazy-max/gohealthchecks to 0.4.1 in #866
* Bump github.com/crazy-max/gonfig to 0.7.1 in #865
* Bump github.com/docker/distribution to 2.8.2+incompatible in #871
* Bump github.com/docker/docker 24.0.2+incompatible in #851 #883
* Bump github.com/go-playground/validator/v10 to 10.14.10 in #778 #852 #896
* Bump github.com/gregdel/pushover to 1.2.0 in #867
* Bump github.com/imdario/mergo to 0.3.16 in #830 #898
* Bump github.com/jedib0t/go-pretty/v6 to 6.4.4 in #760 #803
* Bump github.com/microcosm-cc/bluemonday to 1.0.24 in #780 #810 #876
* Bump github.com/moby/buildkit to 0.11.6 in #790 #809 #848
* Bump github.com/opencontainers/runc to 1.1.5 in #834
* Bump github.com/panjf2000/ants/v2 to 2.7.5 in #846 #889
* Bump github.com/rs/zerolog to 1.29.1 in #777 #854
* Bump github.com/stretchr/testify to 1.8.4 in #801 #897
* Bump go.etcd.io/bbolt to 1.3.7 in #781
* Bump golang.org/x/mod to 0.10.0 in #786 #808 #837
* Bump golang.org/x/net to 0.7.0 in #793
* Bump golang.org/x/sys to 0.8.0 in #784 #807 #857
* Bump google.golang.org/grpc to 1.52.0 in #762 #785 #826 #864
* Bump google.golang.org/grpc/cmd/protoc-gen-go-grpc to 1.3.0 in #806
* Bump google.golang.org/protobuf to 1.30.0 in #818

Full Changelog: https://github.com/crazy-max/diun/compare/v4.24.0...v4.25.0

4.24.0 (2022/12/29)

* Entry metadata field by @crazy-max in #749
* Jitter watch option by @crazy-max in #746
* Allow customizing Signal notification message by @crazy-max in #748

Full Changelog: https://github.com/crazy-max/diun/compare/v4.23.1...v4.24.0

4.23.1 (2022/12/28)

* Fix release file extension by @suzuki-shunsuke in #743

Full Changelog: https://github.com/crazy-max/diun/compare/v4.23.0...v4.23.1

4.23.0 (2022/12/28)

* Nomad provider by @IamTheFij, @crazy-max in #722 #739 #742
* Signal (REST API) notifications support by @MrRagga- in #650
* Fix email notification message template by @crazy-max in #740
* Fix panics when parsing notification templates by @crazy-max in #741
* Fix test notification typo by @vilm3r in #677
* docs: Fix sort_tags by @hatamiarash7 in #655
* docs: List valid log levels by @sliekens in #668
* docs: Fix the issues URL by @DougEdey in #697
* docs: New blog posts from the community by @crazy-max in #657
* Go 1.19 by @crazy-max in #701
* Alpine Linux 3.17 by @crazy-max in #735
* Fix proto gen by @crazy-max in #720
* Enhance workflow by @crazy-max in #706
* Use GITHUB_REF when tag pushed for versioning by @crazy-max in #707
* Bump github.com/AlecAivazis/survey/v2 to 2.3.6 in #686
* Bump github.com/alecthomas/kong to 0.7.1 in #718
* Bump github.com/containerd/containerd to 1.6.14 in #669 #719 #732
* Bump github.com/containers/image/v5 to 5.23.1 in #692 #716
* Bump github.com/crazy-max/gonfig to 0.6.0 in #651
* Bump github.com/docker/go-units to 0.5.0 in #678
* Bump github.com/eclipse/paho.mqtt.golang to 1.4.2 in #711
* Bump github.com/go-playground/validator/v10 to 10.11.1 in #699
* Bump github.com/jedib0t/go-pretty/v6 to 6.4.3 in #694 #715 #724
* Bump github.com/microcosm-cc/bluemonday to 1.0.21 in #695
* Bump github.com/moby/buildkit to 0.10.6 by @crazy-max in #738
* Bump github.com/opencontainers/image-spec to 1.1.0-rc2 in #702
* Bump github.com/panjf2000/ants/v2 to 2.7.1 in #709 #733
* Bump github.com/pkg/profile to 1.7.0 in #705
* Bump github.com/rs/zerolog to 1.28.0 in #676
* Bump github.com/stretchr/testify to 1.8.1 in #708
* Bump github.com/tidwall/pretty to 1.2.1 in #698
* Bump golang.org/x/mod to 0.7.0 by @crazy-max in #736
* Bump golang.org/x/sys to 0.3.0 by @crazy-max in #737
* Bump google.golang.org/grpc to 1.51.0 in #696 #721
* Bump google.golang.org/protobuf to 1.28.1 in #661
* Bump k8s.io/client-go to 0.25.4 in #689 #717

Full Changelog: https://github.com/crazy-max/diun/compare/v4.22.0...v4.23.0

4.22.0 (2022/07/17)

* Allow customizing the hub link by @crazy-max in #648
* Use OCI image url label to override hub link by @crazy-max in #646
* Tags sorting support by @crazy-max in #645
* Alpine Linux 3.16 by @crazy-max in #647
* Go 1.18 by @crazy-max in #592
* MkDocs Material 8.3.9 by @crazy-max in #644
* Explain roles required for rocketchat notification by @hofbi in #553
* Bump github.com/AlecAivazis/survey/v2 to 2.3.5 in #585 #625
* Bump github.com/alecthomas/kong to 0.6.1 in #549 #558 #576 #630
* Bump github.com/containerd/containerd to 1.6.0 in #557
* Bump github.com/containers/image/v5 to 5.21.1 in #552 #588 #603
* Bump github.com/docker/docker to 20.10.3-0.20220414164044-61404de7df1a in #575
* Bump github.com/eclipse/paho.mqtt.golang to 1.4.1 in #623
* Bump github.com/go-playground/validator/v10 to 10.11.0 in #568 #602
* Bump github.com/imdario/mergo to 0.3.13 in #617
* Bump github.com/jedib0t/go-pretty/v6 to 6.3.5 in #555 #584 #595 #642
* Bump github.com/microcosm-cc/bluemonday to 1.0.19 in #554 #636
* Bump github.com/moby/buildkit to 0.10.1-0.20220712094726-874eef9b70db by @crazy-max in #578 #590 #610 #643
* Bump github.com/panjf2000/ants/v2 to 2.5.0 in #563 #611
* Bump github.com/rs/zerolog to 1.27.0 in #626
* Bump github.com/stretchr/testify to 1.8.0 in #635
* Bump google.golang.org/grpc to 1.48.0 in #615 #639
* Bump google.golang.org/protobuf to 1.28.0 in #582
* Bump k8s.io/client-go to 0.24.3 in #561 #580 #604 #640

Full Changelog: https://github.com/crazy-max/diun/compare/v4.21.0...v4.22.0

4.21.0 (2022/01/26)

* Add image prune command by @crazy-max in #519
* Fix matrix login scheme by @crazy-max in #487
* Move syscall to golang.org/x/sys by @crazy-max in #525
* Move from io/ioutil to os package by @crazy-max in #524
* Fix notif template in docs
* Enhance dockerfiles by @crazy-max in #523
* Add binary bake target by @crazy-max in #517
* MkDocs Material 8.1.8 by @crazy-max in #520 #548
* Alpine Linux 3.15 by @crazy-max in #527
* goreleaser-xx 1.2.5 by @crazy-max in #539
* Bump github.com/alecthomas/kong to 0.3.0 in #507 #537
* Bump github.com/containerd/containerd to 1.5.8 in #494 #496 #509
* Bump github.com/containers/image/v5 to 5.19.0 in #498 #536 #546
* Bump github.com/docker/docker to 20.10.12+incompatible in #500 #510 #531
* Bump github.com/go-playground/validator/v10 to 10.10.0 in #538
* Bump github.com/jedib0t/go-pretty/v6 to 6.2.5 in #543
* Bump github.com/microcosm-cc/bluemonday to 1.0.17 in #499 #535
* Bump github.com/moby/buildkit to 0.9.3 in #495 #506 #512
* Bump github.com/opencontainers/image-spec to v1.0.2-0.20211117181255-693428a734f5 by @crazy-max in #513
* Bump github.com/panjf2000/ants/v2 to 2.4.7 in #532
* Bump github.com/rs/zerolog to 1.26.1 in #485 #502 #534
* Bump google.golang.org/grpc to 1.44.0 in #492 #505 #529 #545
* Bump google.golang.org/grpc/cmd/protoc-gen-go-grpc to 1.2.0 in #533
* Bump k8s.io/client-go to 0.22.4 in #490 #511

Full Changelog: https://github.com/crazy-max/diun/compare/v4.20.1...v4.21.0

4.20.1 (2021/09/06)

* Fix notification title by @crazy-max in #483

Full Changelog: https://github.com/crazy-max/diun/compare/v4.20.0...v4.20.1

4.20.0 (2021/09/05)

* Option to render fields by @crazy-max in #480
* Allow choosing status to be notified by @crazy-max in #475
* Enhance notif wording by @crazy-max in #467
* Wrong remaining time displayed by @crazy-max in #469
* Allow multi recipients for email notifier by @crazy-max in #463
* Provide mutable tags for Diun image by @crazy-max in #462
* Fix Dockerfile parser and add tests by @crazy-max in #459
* Add e2e tests by @crazy-max in #471
* Use args in kubernetes documentation example by @paddatrapper in #424
* Fix j2 variable in docs by @crazy-max in #422
* Note to customize the hostname by @crazy-max in #465
* Go 1.17 by @crazy-max in #458
* Add windows/arm64 artifact by @crazy-max in #472
* Add linux/riscv64 artifact by @crazy-max in #427
* Alpine Linux 3.14 by @crazy-max in #426
* MkDocs Material 7.2.6 by @crazy-max in #428 #482
* Protoc 3.17.3 by @crazy-max in #461
* Bump codecov/codecov-action to 2
* Bump github.com/containerd/containerd to 1.5.5 in #433 #440 #447
* Bump github.com/containers/image/v5 to 5.16.0 in #460 #476
* Bump github.com/crazy-max/gonfig to 0.5.0 in #474
* Bump github.com/docker/docker to 20.10.8 in #451
* Bump github.com/go-playground/validator/v10 to 10.9.0 in #429 #445 #455
* Bump github.com/gregdel/pushover to 1.1.0 by @crazy-max in #470
* Bump github.com/jedib0t/go-pretty/v6 to 6.2.4 in #432
* Bump github.com/microcosm-cc/bluemonday to 1.0.15 in #430
* Bump github.com/moby/buildkit to 0.9.0 in #437
* Bump github.com/rs/zerolog to 1.24.0 in #477
* Bump github.com/streadway/amqp to 1.0.0 by @crazy-max in #470
* Bump google.golang.org/grpc to 1.40.0 in #421 #453 #456
* Bump google.golang.org/protobuf to 1.27.1 in #420
* Bump k8s.io/client-go to 0.22.1 in #466

Full Changelog: https://github.com/crazy-max/diun/compare/v4.19.0...v4.20.0

4.19.0 (2021/06/26)

* Allow customizing notification message by @crazy-max in #415
* Bump github.com/containers/image/v5 to 5.13.2 in #412
* Bump github.com/microcosm-cc/bluemonday to 1.0.14 in #413
* Bump github.com/panjf2000/ants/v2 to 2.4.6 in #416
* Bump k8s.io/client-go to 0.21.2 in #414

Full Changelog: https://github.com/crazy-max/diun/compare/v4.18.0...v4.19.0

4.18.0 (2021/06/18)

* Handle registry auth config by @crazy-max in #411
* Bump github.com/alecthomas/kong to 0.2.17 in #401
* Bump github.com/containers/image/v5 to 5.13.1 in #409
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.5 in #400
* Bump github.com/jedib0t/go-pretty/v6 to 6.2.2 in #388
* Bump github.com/microcosm-cc/bluemonday to 1.0.13 in #403 #410
* Bump github.com/rs/zerolog to 1.23.0 in #405
* Bump github.com/tidwall/pretty to 1.2.0 in #390 #402
* Bump go.etcd.io/bbolt to 1.3.6 in #394
* Bump google.golang.org/grpc to 1.38.0 in #389
* Bump k8s.io/client-go to 0.21.1 in #381
* Avoid notification for unupdated image by @crazy-max in #406
* Use openssl pkg by @crazy-max in #407
* Bumps github.com/docker/docker to 20.10.7+incompatible in #397
* Set cacheonly output for validators by @crazy-max in #395
* Define serve command by @crazy-max in #393
* Save raw manifest in db by @crazy-max in #391

Full Changelog: https://github.com/crazy-max/diun/compare/v4.17.0...v4.18.0

4.17.0 (2021/05/26)

:warning: See Migration notes in the documentation before upgrading.

* Add CLI to interact with Diun through gRPC by @crazy-max in #382
* Create image and notif proto services
* Implement proto definitions
* New commands serve, image and notif
* Refactor command line usage doc
* Better CLI error handling
* Tools build constraint to manage tools deps through go modules
* Compile and validate protos through a dedicated Dockerfile and a bake target
* Merge validate and build workflow
* Add upgrade notes
* Bump github.com/containerd/containerd to 1.5.2 by @crazy-max in #353 #361 #362 #383
* Bump github.com/containers/image/v5 to 5.12.0 in #360
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.4 in #359
* Bump github.com/go-playground/validator/v10 to 10.6.1 in #377
* Bump github.com/moby/buildkit to 0.8.3 in #354
* Bump github.com/panjf2000/ants/v2 to 2.4.5 in #380
* Bump github.com/pkg/profile to 1.6.0 in #363
* Bump github.com/rs/zerolog to 1.22.0 in #379
* MkDocs Materials 7.1.5 by @crazy-max in #386
* Add NO_COLOR support by @crazy-max in #384
* Move to docker/metadata-action by @crazy-max in #366
* Add blog posts by @crazy-max in #355 #385

Full Changelog: https://github.com/crazy-max/diun/compare/v4.16.1...v4.17.0

4.16.1 (2021/04/30)

* Fix Swarm Provider by @crazy-max in #351

Full Changelog: https://github.com/crazy-max/diun/compare/v4.16.0...v4.16.1

4.16.0 (2021/04/29)

* Dockerfile provider by @crazy-max in #329
* Note about watch_repo setting by @crazy-max in #348
* Contribute to doc by @crazy-max in #347
* Update docs for Podman support by @signed-log in #345
* Optional profiler volume by @crazy-max in #344

Full Changelog: https://github.com/crazy-max/diun/compare/v4.15.2...v4.16.0

4.15.2 (2021/04/25)

* Make profiler optional by @crazy-max in #341

Full Changelog: https://github.com/crazy-max/diun/compare/v4.15.1...v4.15.2

4.15.1 (2021/04/25)

* Fix profiler path by @crazy-max in #339

Full Changelog: https://github.com/crazy-max/diun/compare/v4.15.0...v4.15.1

4.15.0 (2021/04/25)

* Add darwin/arm64 artifact by @crazy-max in #338
* MkDocs Materials 7.1.3 by @crazy-max in #337
* Add profiler flag by @crazy-max in #336
* Handle digest based image reference by @crazy-max in #335
* Bump github.com/containers/image/v5 to 5.11.1 in #323 #330
* Bump github.com/docker/docker to 20.10.6+incompatible in #324
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.3 in #316
* Bump github.com/go-playground/validator/v10 to 10.5.0 in #319
* Bump github.com/microcosm-cc/bluemonday to 1.0.9 in #311 #321 #325 #333
* Bump github.com/panjf2000/ants/v2 to 2.4.4 in #312
* Bump github.com/rs/zerolog to 1.21.0 in #309
* Deploy docs on workflow dispatch or tag by @crazy-max in #305

Full Changelog: https://github.com/crazy-max/diun/compare/v4.14.0...v4.15.0

4.14.0 (2021/03/15)

* Bump github.com/alecthomas/kong to 0.2.16 in #295
* Bump github.com/containers/image/v5 to 5.10.5 in #290
* Bump github.com/crazy-max/gohealthchecks to 0.3.0 in #296
* Bump github.com/imdario/mergo to 0.3.12 in #298
* Bump k8s.io/client-go to 0.20.4 in #280
* Docker client 20.10.5 by @crazy-max in #303
* Allow telegram chat IDs as file by @crazy-max in #301
* Go 1.16 by @crazy-max in #302
* Handle git ref for artifact target
* Allow configuring scheme for MQTT broker by @fblackburn1 in #292
* Switch to goreleaser-xx by @crazy-max in #291

Full Changelog: https://github.com/crazy-max/diun/compare/v4.13.0...v4.14.0

4.13.0 (2021/03/01)

* Missing token as secret setting for some notifiers by @crazy-max in #289
* Allow disabling log color output by @crazy-max in #288
* Bump github.com/containers/image/v5 to 5.10.4 in #271 #282 #284
* Cleanup workflows by @crazy-max in #281 #287
* Do not check recipient details for Pushover by @crazy-max in #277
* MkDocs Materials 6.2.8 by @crazy-max in #276
* Fix markdown renderer by @crazy-max in #275
* Add message client for notifiers by @crazy-max in #273

Full Changelog: https://github.com/crazy-max/diun/compare/v4.12.0...v4.13.0

4.12.0 (2021/02/09)

* Use digest as comparison footprint by @crazy-max in #269
* Bump github.com/alecthomas/kong to 0.2.15 in #270
* Bump github.com/containers/image/v5 to 5.10.1 in #265
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.2 in #268
* Move to docker/bake-action by @crazy-max in #266
* Typo in documentation by @TheCatLady in #258
* Log image validation

Full Changelog: https://github.com/crazy-max/diun/compare/v4.11.0...v4.12.0

4.11.0 (2021/01/04)

* Fix DB migration by @crazy-max in #255
* Add Pushover notification by @crazy-max in #254
* Avoid duplicated notifications with Kubernetes DaemonSet by @crazy-max in #252
* Make scheduler optional by @crazy-max in #251
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.1 in #249
* Handle exclusions as a distinct status by @crazy-max in #248

Full Changelog: https://github.com/crazy-max/diun/compare/v4.10.0...v4.11.0

4.10.0 (2020/12/26)

* Refactor CI and dev workflow with buildx bake by @crazy-max in #247
* Upload artifacts
* Add image-local target
* Single job for artifacts and image
* Add armv5 artifact
* MQTT Reconnection Log Spam by @aschoelzhorn in #241
* Add Docker + File providers user guide by @crazy-max in #239
* Bump github.com/alecthomas/kong to 0.2.12 in #231
* Bump github.com/containers/image/v5 to 5.8.1 in #226
* Bump github.com/containers/image/v5 to 5.9.0 in #236
* Bump github.com/eclipse/paho.mqtt.golang to 1.3.0 in #235
* Bump gopkg.in/yaml.v2 to 2.4.0 in #228

Full Changelog: https://github.com/crazy-max/diun/compare/v4.9.0...v4.10.0

4.9.0 (2020/11/16)

* Fix duplicated notifications
Remove support for freebsd/ (moby/moby#38818)
* Add support for linux/ppc64le and linux/s390x (binary)
* Bump github.com/containers/image/v5 to 5.8.0
* Bump k8s.io/client-go to 0.19.4 in #224

Full Changelog: https://github.com/crazy-max/diun/compare/v4.8.1...v4.9.0

4.8.1 (2020/11/14)

* Fix registry timeout context in #221
* Image closer not required while fetching tags

Full Changelog: https://github.com/crazy-max/diun/compare/v4.8.0...v4.8.1

4.8.0 (2020/11/13)

* Go 1.15 by @crazy-max in #218
* Remove linux/s390x platform support (for now)
* Check digest from HEAD request by @crazy-max in #217
* Add FAQ note about Docker Hub rate limits
* Compare digest as watch setting
* Optimize build time
* Add hub link for GitHub Container Registry by @crazy-max in #211
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v4.7.0...v4.8.0

4.7.0 (2020/11/02)

* Add MQTT notification by @aschoelzhorn in #192
* Docker image also available on GitHub Container Registry
* Use zoneinfo from Go in #202
* Remove --timezone flag
* Use Docker meta action to handle tags and labels
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v4.6.1...v4.7.0

4.6.1 (2020/10/22)

* Typos in documentation
* Bump codecov/codecov-action to v1.0.14 in #195
* Bump docker/login-action to v1.6.0 in #198
* Bump github.com/go-playground/validator/v10 to 10.4.1 in #197
* Bump github.com/panjf2000/ants/v2 to 2.4.3 in #196
* Bump k8s.io/client-go to 0.19.3 in #199

Full Changelog: https://github.com/crazy-max/diun/compare/v4.6.0...v4.6.1

4.6.0 (2020/10/13)

* Add support for Healthchecks to monitor Diun watcher in #78
* Add option to mention specific users or roles for Discord notifier in #188
* Update docker install documentation
* Add "Too many requests to registry" section in FAQ in #168
* Update deps
* Switch to Docker actions

Full Changelog: https://github.com/crazy-max/diun/compare/v4.5.0...v4.6.0

4.5.0 (2020/08/29)

* Allow setting the hostname sent to the SMTP server with the HELO command for mail notification in #165
* Fix Telegram notification error in #162

Full Changelog: https://github.com/crazy-max/diun/compare/v4.4.1...v4.5.0

4.4.1 (2020/08/20)

* Allow using --test-notif without providers and DB connection in #157 #150
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v4.4.0...v4.4.1

4.4.0 (2020/08/08)

* Allow customizing message type for Matrix notifications in #143

Full Changelog: https://github.com/crazy-max/diun/compare/v4.3.1...v4.4.0

4.3.1 (2020/07/30)

* Hostname not taken into account for Matrix notifications

Full Changelog: https://github.com/crazy-max/diun/compare/v4.3.0...v4.3.1

4.3.0 (2020/07/29)

* Add Matrix notification in #124

Full Changelog: https://github.com/crazy-max/diun/compare/v4.2.0...v4.3.0

4.2.0 (2020/07/16)

* Seek configuration file from default places in #107
* Switch to gonfig
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v4.1.1...v4.2.0

4.1.1 (2020/06/26)

* Small typo

Full Changelog: https://github.com/crazy-max/diun/compare/v4.1.0...v4.1.1

4.1.0 (2020/06/26)

* Discord notifications by @crazy-max in #110 #111
* Update migration notes in #107
* Logging when configuration file or DIUN_ env vars not found in #107
* Bump github.com/containers/image/v5 to 5.5.1 in #96

Full Changelog: https://github.com/crazy-max/diun/compare/v4.0.0...v4.1.0

4.0.0 (2020/06/22)

:warning: See Migration notes in the documentation for breaking changes.

* Display hostname in notifications in #102
* Automatically determine registry options based on image name by @crazy-max in #103
* Docs website with mkdocs in #99
* Skip dangling images in #98
* More explicit message if manifest not found in #94
* Add swarm example
* Update doc for file and Swarm providers
* Add Kubernetes provider in #25
* Update Teams notification screenshot by @margaale in #93
* Send message as markdown for Gotify and Telegram notifiers
* Add link to respective hub in #40
* Configuration transposed into environment variables by @crazy-max in #82
* Configuration file not required anymore
* DIUN_DB env var renamed DIUN_DB_PATH
* Only accept duration as timeout value (10 becomes 10s)
* Enhanced documentation in #83
* Add note about test notifications by @Tooa in #79
* Improve configuration validation
* Fix telegram init
* All fields in configuration are now _camelCased_
* Docker API version negotiation in #29
* Add Mattermost compatibility via Slack webhooks by @Twilek-de in #80
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v3.0.0...v4.0.0

3.0.0 (2020/05/27)

:warning: See Migration notes in the documentation for breaking changes.

* Add script notification in #53
* Add Teams notification by @margaale in #72
* Add --test-notif flag in #23
* Allow only one Docker and Swarm provider
* Remove "enable" setting for notifiers
* Logging when no image is found
* Add Amqp notification client by @margaale in #63
* Fix default log level
* Move static to file provider by @crazy-max in #71
* Reload config on change for file provider in #16
* Switch to kong command-line parser by @crazy-max in #66
* Enhanced Dockerfile
* Review of platform detection in #57
* Leave default image platform empty for file provider (see FAQ doc)
* Handle platform variant
* Add database migration process
* Switch to Open Container Specification labels as label-schema.org ones are deprecated
* Remove unneeded diun.os and diun.arch docker labels
* Add upgrade notes
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v2.6.1...v3.0.0

2.6.1 (2020/03/26)

* Downgrade containers/image to 5.2.1 in #54

Full Changelog: https://github.com/crazy-max/diun/compare/v2.6.0...v2.6.1

2.6.0 (2020/03/26)

* Fix service image inspection in #52
* Docker client v19.03.8
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v2.5.0...v2.6.0

2.5.0 (2020/03/01)

* Add Rocket.Chat notifier by @crazy-max in #44

Full Changelog: https://github.com/crazy-max/diun/compare/v2.4.0...v2.5.0

2.4.0 (2020/02/17)

* Add Gotify notification client by @crazy-max in #36
* Bump containers/image v5 by @crazy-max in #35

Full Changelog: https://github.com/crazy-max/diun/compare/v2.3.0...v2.4.0

2.3.0 (2020/01/28)

* Add Telegram notifier by @DanNixon in #30
* Docker client struct options
* Move registry client to a dedicated package

Full Changelog: https://github.com/crazy-max/diun/compare/v2.2.1...v2.3.0

2.2.1 (2020/01/07)

* Set user agent for Docker registry client
* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v2.2.0...v2.2.1

2.2.0 (2019/12/22)

* Add option to skip notification at the very first analysis of an image in #10
* Skip analysis of locally built image

Full Changelog: https://github.com/crazy-max/diun/compare/v2.1.0...v2.2.0

2.1.0 (2019/12/17)

* Add Slack notifier in #8

Full Changelog: https://github.com/crazy-max/diun/compare/v2.0.0...v2.1.0

2.0.0 (2019/12/14)

:warning: See Migration notes in the documentation for breaking changes.

* Include provider in notifications
* Add providers documentation
* Move image validation and improve job execution
* Add Swarm provider
* Add fields to load sensitive values from file in #7
* Add Docker provider in #3
* Docker client v19.03.5
* Move image field to providers layer and rename it static
* Update deps
* Go 1.13.5
* Seconds field optional for schedule

Full Changelog: https://github.com/crazy-max/diun/compare/v1.4.1...v2.0.0

1.4.1 (2019/10/20)

* Update deps
* Fix Docker labels

Full Changelog: https://github.com/crazy-max/diun/compare/v1.4.0...v1.4.1

1.4.0 (2019/10/01)

* Multi-platform Docker image
* Switch to GitHub Actions
* Stop publishing Docker image on Quay
* Go 1.12.10
* Use GOPROXY

Full Changelog: https://github.com/crazy-max/diun/compare/v1.3.0...v1.4.0

1.3.0 (2019/08/22)

* Add Linux service doc and sample
* Move documentation
* Fix go mod
* Remove --docker flag
* Allow overriding database path through DIUN_DB env var

Full Changelog: https://github.com/crazy-max/diun/compare/v1.2.0...v1.3.0

1.2.0 (2019/08/18)

* Update deps
* Display containers/image logs
* Fix registry options not setted in #5

Full Changelog: https://github.com/crazy-max/diun/compare/v1.1.0...v1.2.0

1.1.0 (2019/07/24)

* Update deps

Full Changelog: https://github.com/crazy-max/diun/compare/v1.0.2...v1.1.0

1.0.2 (2019/07/01)

* Worker pool can be full while retrieving tags

Full Changelog: https://github.com/crazy-max/diun/compare/v1.0.1...v1.0.2

1.0.1 (2019/07/01)

* Fix runtime error

Full Changelog: https://github.com/crazy-max/diun/compare/v1.0.0...v1.0.1

1.0.0 (2019/07/01)

:warning: See Migration notes in the documentation for breaking changes.

* Always run on startup. Flag --run-startup removed.
* Display next execution time
* Use v3 robfig/cron
* Move Os and Arch filters to image
* Retrieve all tags by default
* Review config file structure
* Improve worker pool

Full Changelog: https://github.com/crazy-max/diun/compare/v0.5.0...v1.0.0

0.5.0 (2019/06/09)

* Add worker pool to parallelize analyses

Full Changelog: https://github.com/crazy-max/diun/compare/v0.4.1...v0.5.0

0.4.1 (2019/06/08)

* Filter tags before return them

Full Changelog: https://github.com/crazy-max/diun/compare/v0.4.0...v0.4.1

0.4.0 (2019/06/08)

* Add option to set the maximum number of tags to watch for an item if watch_repo is enabled

Full Changelog: https://github.com/crazy-max/diun/compare/v0.3.2...v0.4.0

0.3.2 (2019/06/08)

* Fix registry client context

Full Changelog: https://github.com/crazy-max/diun/compare/v0.3.1...v0.3.2

0.3.1 (2019/06/08)

* Fix email template
* Add flag to log caller

Full Changelog: https://github.com/crazy-max/diun/compare/v0.3.0...v0.3.1

0.3.0 (2019/06/08)

* Allow overriding os and architecture when watching
* Move insecure_tls and timeout options to registry option
* Rename Bolt bucket
* Change default schedule
* Review registry client

Full Changelog: https://github.com/crazy-max/diun/compare/v0.2.0...v0.3.0

0.2.0 (2019/06/05)

* Don't skip repo analysis if default tag not found
* Docker engine 18.09.6

Full Changelog: https://github.com/crazy-max/diun/compare/v0.1.1...v0.2.0

0.1.1 (2019/06/04)

* Increase default timeout
* Fix data volume mount

Full Changelog: https://github.com/crazy-max/diun/compare/v0.1.0...v0.1.1

0.1.0 (2019/06/04)

* Initial version

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