services:
  watchtower:
    image: containrrr/watchtower
    container_name: watchtower
    restart: always
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    env_file:
      - ./.env # The HOMEPAGE_VAR_WATCHTOWER_KEY is taken from the homepage .env
    environment:
      # This tells Watchtower to clean up old images after updating
      - WATCHTOWER_CLEANUP=true
      # This sets how often to check for updates (in seconds). 86400 = 24 hours.
      - WATCHTOWER_POLL_INTERVAL=86400
      - DOCKER_API_VERSION=1.44
      - WATCHTOWER_HTTP_API_METRICS=true # Required for the widget
      - WATCHTOWER_HTTP_API_TOKEN=${HOMEPAGE_VAR_WATCHTOWER_KEY}
    ports:
      - 8080:8080