# 介紹

WatchTower 啓動後，會開始幫你監控機器上所有正在執行的 container，每隔一段時間發現有新的 image 後，它就會幫你下載最新 image 並且使用你當初建立該 container 時的相同環境設定去幫你重新啓動容器。

# 開啟 WatchTower

接下來會介紹兩個方式開啟 WatchTower:

	docker run -d \
	--name watchtower \
	-v /var/run/docker.sock:/var/run/docker.sock \
	containrrr/watchtower

docker-compose.yml

	version: '1.0'

	services:
	nginx:
	image: nginx
	container_name: nginx
	ports:
	- 80:80
	watchtower:
	image: containrrr/watchtower
	container_name: watchtower
	volumes:
	- /var/run/docker.sock:/var/run/docker.sock

	networks:
	site:

docker-compose.yml

	version: '1.0'

	services:
	nginx:
	build: .
	container_name: nginx
	restart: always
	environment:
	- TZ=Asia/Taipei
	volumes:
	- ./site:/var/www/html
	- ./nginx:/etc/nginx/conf.d
	- ./nginx/ssl/:/etc/nginx/ssl/:ro
	- ./nginx/log:/var/log/nginx
	ports:
	- 80:80
	- 443:443
	- 1337:1337
	networks:
	- site

	website_frontend:
	image: [The-image-on-the-docker-hub-need-to-use:${MODE}]
	container_name: website_frontend
	restart: always
	expose:
	- 3000
	networks:
	- site

	website_backend:
	image: [The-image-on-the-docker-hub-need-to-use:${MODE}]
	container_name: website_backend
	restart: always
	environment:
	- PUBLIC_URL=[]
	expose:
	- 1337
	volumes:
	- ./website_backend/.backend_env:/opt/app/.env
	- ./website_backend/database/:/opt/app/.tmp/
	- ./website_backend/media/:/opt/app/public/uploads
	networks:
	- site
	# 設置日誌
	logging:
	driver: "json-file"
	options:
	max-size: "10m"
	max-file: "3"

	watchtower:
	image: containrrr/watchtower
	container_name: watchtower
	restart: always
	volumes:
	- /var/run/docker.sock:/var/run/docker.sock
	command: --interval 30 website_frontend website_backend

	networks:
	site: