tailscale-android Docker & Self-Hosted Deployment

# This is a Dockerfile for creating a build environment for
# tailscale-android.

FROM --platform=linux/amd64 eclipse-temurin:21-jdk-jammy

ENV HOME /build
ENV ANDROID_HOME $HOME/android-sdk
ENV ANDROID_SDK_ROOT $ANDROID_HOME
ENV PATH $PATH:$HOME/bin:$ANDROID_HOME/platform-tools

RUN mkdir -p \
    ${HOME} \
    /android-sdk \
    ${ANDROID_HOME} \
    $HOME/tailscale-android

# To enable running android tools such as aapt
COPY scripts/docker-build-apt-get.sh /tmp
RUN chmod 755 /tmp/docker-build-apt-get.sh && \
    /tmp/docker-build-apt-get.sh && \
    rm -f /tmp/docker-build-apt-get.sh

# We need some version of Go new enough to support the "embed" package
# to run "go run tailscale.com/cmd/printdep" to figure out which Tailscale Go
# version we need later, but otherwise this toolchain isn't used:
RUN \
    curl -L https://go.dev/dl/go1.26.5.linux-amd64.tar.gz | tar -C /usr/local -zxv && \
    ln -s /usr/local/go/bin/go /usr/bin

RUN git config --global --add safe.directory $HOME/tailscale-android
WORKDIR $HOME/tailscale-android

COPY Makefile Makefile
COPY android/gradle.properties android/gradle.properties

# Get android sdk, ndk, and rest of the stuff needed to build the android app.
RUN make androidsdk

# Preload Gradle
COPY android/gradlew android/build.gradle.kts android/
COPY android/gradle android/gradle

RUN chmod 755 android/gradlew && \
    ./android/gradlew

# Build the android app, bump the playstore version code, and make the tv release
CMD make clean && make release && make release-tv