使用网络
version: '2'
services:
  web:
    image: http
    networks:
      - myappnet1
  worker:
    image: http
    networks:
      - myappnet2
  db:
    image: http
    networks:
      myappnet1:
        aliases:
          - database
      myappnet2:
        aliases:
          - mysql
networks:
  myappnet1:
  myappnet2:


使用links
version: '2'
services:
 web:
  image: http
  container_name: web
  depends_on:
   - db
  ports:
   - "9090:80"
  links:
   - db:mysql
 db:
  image: mariadb
  container_name: db
  environment:
    MYSQL_ROOT_PASSWORD: somewordpress
    MYSQL_DATABASE: wordpress
    MYSQL_USER: wordpress
    MYSQL_PASSWORD: wordpress