docker入门课程 ghost 在 db 启动起来之前连接数据库

version: '2'
networks:
  ghost:
services:
  ghost-app:
    build: ghost
    networks:
      - ghost
    depends_on:
      - db
    ports:
      - "2368:2368"
  nginx:
    build: nginx
    networks:
      - ghost
    depends_on:
      - ghost-app
    ports:
      - "80:80"
  db:
    image: "mysql:5.7.15"
    networks:
      - ghost
    environment:
      MYSQL_ROOT_PASSWORD: mysqlroot
      MYSQL_USER: ghost
      MYSQL_PASSWORD: ghost
    volumes:
      - $PWD/data:/var/libmysql
    ports:
      - "3306:3306"