services:
  mongo:
    image: mongo:4.4
    container_name: mongo
    restart: always
    volumes:
      - mongo_data:/data/db
    ports:
      - "27017:27017"
    command: ["--replSet", "dbrs", "--bind_ip_all"]

  mongosetup:
    image: mongo:4.4
    container_name: mongosetup
    depends_on:
      - mongo
    entrypoint: >
      bash -c "sleep 5 &&
      mongo --host mongo:27017 --eval '
        rs.initiate({
          _id: \"dbrs\",
          members: [
            { _id: 0, host: \"mongo:27017\"}
          ]
        })
      '"

volumes:
  mongo_data: