services:
  watchtower:
    image: containrrr/watchtower
    container_name: watchtower
    restart: unless-stopped
    environment:
      WATCHTOWER_LABEL_ENABLE: "true"
      WATCHTOWER_SCHEDULE: "0 0 4 * * *"
      WATCHTOWER_CLEANUP: "true"
      WATCHTOWER_NOTIFICATIONS: shoutrrr
      WATCHTOWER_NOTIFICATION_URL: "smtp://${SMTP_USER_ENCODED}:${SMTP_PASSWORD_ENCODED}@smtp.gmail.com:1587/?from=${SMTP_FROM}&to=${SMTP_TO}"
    extra_hosts:
      - "smtp.gmail.com:192.168.31.222"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    logging:
      driver: json-file
      options:
        max-size: "10m"
        max-file: "3"