使用 watchtower 自動更新 docker images

services:
  your-app:
    image: your-image:latest
    # 其他應用配置...

  watchtower:
    container_name: watchtower
    image: containrrr/watchtower
    network_mode: host
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      - TZ=Asia/Taipei
      - WATCHTOWER_SCHEDULE=0 0 4 * * *  # 每天凌晨4點檢查更新
      - WATCHTOWER_CLEANUP=true  # 清理舊的映像檔
      #- WATCHTOWER_NOTIFICATIONS=slack  # 使用 Slack 通知
      #- SLACK_HOOK_URL=https://hooks.slack.com/services/YOUR/SLACK/WEBHOOK
      #- WATCHTOWER_NOTIFICATIONS=email  # 使用 EMail 通知
      #- WATCHTOWER_NOTIFICATIONS_HOSTNAME=${HOSTNAME}
      #- [email protected]
      #- [email protected]
      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER=smtp.gmail.com
      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PORT=587
      #- [email protected]
      #- WATCHTOWER_NOTIFICATION_EMAIL_SERVER_PASSWORD=app_password
      #- WATCHTOWER_NOTIFICATION_EMAIL_DELAY=2      
    labels:
      - "com.centurylinklabs.watchtower.enable=true"
    restart: unless-stopped