services:
  watchtower:
    image: containrrr/watchtower
    container_name: watchtower
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - WATCHTOWER_POLL_INTERVAL=300 # Check for updates every 300 seconds (5 minutes)
      - WATCHTOWER_CLEANUP=true # Remove old images after updates
      # - WATCHTOWER_NOTIFICATION_URL=shoutrrr://<your_notification_service_url> # Example for notifications
    restart: unless-stopped