Docker cpmpose 基本应用

$ sudo curl -L https://github.com/docker/compose/releases/download/1.17.1/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
$ sudo chmod +x /usr/local/bin/docker-compose

version: ‘3‘
services :
  myweb: --服务名
    restart:always
    image:tomcat  --镜像名
    contrainer_name:tomcat  --容器名
    volumes:
      -/user/local/docker/myspring/tomcat/webapps:/usr/local/tomcat/webapps/ 
    ports:
      - 8080:8080
  mysql:
    restart:always
    image:mysql:5.7.22
    container_name:mysql
    ports:
      -3306:3306
    enbironment:
      MYSQL_ROOT_PASSWORD:123456 
    command:
      --max_allowed_packet=128M
    volumes:
      - mysql-data:var/lib/mysql
volumes:   (这里是由docker-compose统一管理的数据卷，上面mysql 用的数据卷就是这里声明的这个，默认在主机 /var/lib/docker/volumes 目录下)
  mysql-data: