docker镜像地址
    https://hub.docker.com/

    1 - 拉去mysql镜像

    命令: docker pull mysql:5.7 拉取指定版本的mysql
    命令: docker images 查看已经存在的镜像

    1. ~
    2. ~ docker pull mysql:5.7
    3. 5.7: Pulling from library/mysql
    4. 72a69066d2fe: Pull complete
    5. 93619dbc5b36: Pull complete
    6. 99da31dd6142: Pull complete
    7. 626033c43d70: Pull complete
    8. 37d5d7efb64e: Pull complete
    9. ac563158d721: Pull complete
    10. d2ba16033dad: Pull complete
    11. 0ceb82207cd7: Pull complete
    12. 37f2405cae96: Pull complete
    13. e2482e017e53: Pull complete
    14. 70deed891d42: Pull complete
    15. Digest: sha256:f2ad209efe9c67104167fc609cca6973c8422939491c9345270175a300419f94
    16. Status: Downloaded newer image for mysql:5.7
    17. docker.io/library/mysql:5.7
    18. ~
    19. ~
    20. ~ docker images
    21. REPOSITORY TAG IMAGE ID CREATED SIZE
    22. mysql 5.7 c20987f18b13 11 days ago 448MB
    23. mongo latest dfda7a2cf273 3 weeks ago 693MB
    24. ~
    25. ~

    2 - 创建mysql实例并启动:

    docker run -p 3306:3306 —name mysql \
    -v /mydata/mysql/log:/var/log/mysql\
    -v /mydata/mysql/data:/var/lib/mysql\
    -v /mydata/mysql/conf:/etc/mysql\
    -e MYSQL_ROOT_PASSWORD=ROOT\
    -d mysql:5.7

    参数说明:
    # —name指定容器名字 -v目录挂载 -p指定端口映射 -e设置mysql参数 -d后台运行
    sudo docker run —name mysql -v /usr/local/mysql/data:/var/lib/mysql -v /usr/local/mysql:/etc/mysql/conf.d -v /usr/local/mysql/log:/var/log/mysql -e MYSQL_ROOT_PASSWORD=root -p 3306:3306 -d mysql:5.7

    ➜  ~ sudo docker run --name mysql
    -v /usr/local/mysql/data:/var/lib/mysql 
    -v /usr/local/mysql:/etc/mysql/conf.d 
    -v /usr/local/mysql/log:/var/log/mysql  
    -e MYSQL_ROOT_PASSWORD=root  
    -p 3306:3306 
    -d mysql:5.7
    d8c5ccc08cdf8d32ea714cca246685f1fe9d76c79d86ece22b9159da7c02b6f7
    ➜  ~ 
    ➜  ~ 
    ➜  ~
    

    3 使用su - root(切换为root,这样就不用每次都sudo来赐予了)
    su - root
    4 进入mysql容器
    docker exec -it 容器名称|容器id bin/bash

    ➜  ~ 
    ➜  ~ sudo docker exec -it mysql bash
    root@d8c5ccc08cdf:/# 
    root@d8c5ccc08cdf:/#