最近使用云服务器，学习一下Docker，今天学着使用Docker安装MySQL。首先，从阿里云的Docker Hub 上pull一个MySQL的image.
[CentOS@linuxidc~]$ docker pull registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7
5.7: Pulling from acs-sample/mysql
d4bce7fd68df: Pull complete
a3ed95caeb02: Pull complete
01588229585e: Pull complete
ada32b818a1a: Pull complete
ac7528e308ac: Pull complete
44e3fb8779c7: Pull complete
bfcca86efc6a: Pull complete
32da415dff2e: Pull complete
aae6d9712a36: Pull complete
3148136ce9cc: Pull complete
Digest: sha256:32ff2f404c3bd199aaec2e6d19d91d59673e40d7394732124f91dd72a2e1ed97
Status: Downloaded newer image for registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7
查看下载镜像，就会看到已经有了
[centos@linuxidc~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test/Ubuntu v1.0 523e7db0e264 11 minutes ago 98.3MB
ubuntu latest dd6f76d9cc90 7 days ago 122MB
hello-world latest 725dcfab7d63 8 days ago 1.84kB
registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql 5.7 ec7e75e5260c 23 months ago 360MB
名字太长，修改为短的tag
[centos@linuxidc~]$ docker tag registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql:5.7 mysql:5.7
[centos@linuxidc~]$ docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
test/ubuntu v1.0 523e7db0e264 12 minutes ago 98.3MB
ubuntu latest dd6f76d9cc90 7 days ago 122MB
hello-world latest 725dcfab7d63 8 days ago 1.84kB
mysql 5.7 ec7e75e5260c 23 months ago 360MB
registry.cn-hangzhou.aliyuncs.com/acs-sample/mysql 5.7 ec7e75e5260c 23 months ago 360MB
根据镜像创建容器
[centos@linuxidc~]$ docker create -it mysql:5.7
62c975b37ad25b03914eb61e05088019f37ff9cb049a682ac02f20fac1761a4d
启动MySQL容器
[centos@linuxidc~]$ docker run --name mysqlserver -e MYSQL_ROOT_PASSWORD=sgcc -d -i -p 3306:3306 mysql:5.7
2a7a85124400be6fd47e0d97cf5d602456b1db1a11c6331747fe662481eea537
[centos@linuxidc~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2a7a85124400 mysql:5.7 "/entrypoint.sh my..." 9 seconds ago Up 8 seconds 0.0.0.0:3306->3306/tcp mysqlserver
188099665d1e ubuntu:latest "/bin/bash" 23 hours ago Up 23 hours angry_spence
进入MySQL终端