services:
  app:
    image: containrrr/watchtower:latest
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
    environment:
      TZ: ${WATCHTOWER_TZ}
      WATCHTOWER_CLEANUP: true # Remove old images after updating
      WATCHTOWER_REMOVE_VOLUMES: false # Remove attached volumes after updating
      DOCKER_API_VERSION: 1.45 # SSH docker version 1.41 for Docker engine version 20.10 - 1.43 for Docker engine version 24 - 1.45 for Docker engine version 26.1
      WATCHTOWER_INCLUDE_RESTARTING: true # Restart containers after update
      WATCHTOWER_INCLUDE_STOPPED: false # Update stopped containers
      WATCHTOWER_SCHEDULE: "0 0 */2 * * *" # Update & Scan containers every 2 hours
      WATCHTOWER_LABEL_ENABLE: false
      WATCHTOWER_ROLLING_RESTART: true
      WATCHTOWER_TIMEOUT: 30s
      WATCHTOWER_LOG_FORMAT: pretty
    restart: unless-stopped