为啥我会选择MySQL呢？因为我的服务器配置较低，而SqlServer在docker中的实例，服务器的运行内存应当保持在2G+,我没有这个条件,它会爆出这样的错误 sqlservr: This program requires a machine with at least 2000 megabytes of memory. 听我朋友说就算你的机器是2G的，也会报这个错误，看了好多网上破解的很是不友好，害怕出更多的问题，所以自然就选择了MySql，（SqlServer吃配置还是很高的）...
当然我们首先也应当在docker中安装mysql容器，我们首先可以通过 docker search mysql 来查询关键字的镜像。NAME:镜像仓库源的名称、DESCRIPTION:镜像的描述、OFFICIAL:是否docker官方发布..如果要看实际的version，则就可以去https://hub.docker.com/ 中找找了.
[root@iZenarrdqnvpc4Z ~]# docker search mysql
NAME DESCRIPTION STARS OFFICIAL AUTOMATED
mysql MySQL is a widely used, open-source relation… 8995 [OK]
mariadb MariaDB is a community-developed fork of MyS… 3175 [OK]
mysql/mysql-server Optimized MySQL Server Docker images. Create… 669 [OK]
percona Percona Server is a fork of the MySQL relati… 464 [OK]
CentOS/mysql-57-centos7 MySQL 5.7 SQL database server 66
centurylink/mysql Image containing mysql. Optimized to be link… 61 [OK]
mysql/mysql-cluster Experimental MySQL Cluster Docker images. Cr… 59
deitch/mysql-backup REPLACED! Please use … 41 [OK]
下面直接安装mysql镜像，通过命令 docker pull mysql:latest ，装了个最新版的..哈哈 喜新厌旧嘛...出现了status就ok了...
[root@iZenarrdqnvpc4Z ~]# docker pull mysql:latest
latest: Pulling from library/mysql
804555ee0376: Pull complete
c53bab458734: Pull complete
ca9d72777f90: Pull complete
2d7aad6cb96e: Pull complete
...............................
Digest: sha256:e1b0fd480a11e5c37425a2591b6fbd32af886bfc6d6f404bd362be5e50a2e632
Status: Downloaded newer image for mysql:latest
docker.io/library/mysql:latest
随后创建Mysql挂在目录，用于存放配置、数据、日志文件，随后启动mysql容器并指定刚刚创建的挂在目录，这两行是分开执行的。
mkdir -p $HOME/mysql/{conf.d,data,logs}
docker run --name mysql -p 3306:3306 -v $HOME/mysql/data:/var/lib/mysql -v $HOME/mysql/conf.d:/etc/mysql/conf.d -v $HOME/mysql/logs:/logs --privileged=true -e MYSQL_ROOT_PASSWORD=123456 -d mysql
进入mysql容器。通过root账号登录mysql服务，然后它让你输入密码，这个场景下应该是123456，如果没问题的话就进去了mysql开头的tag中。
[root@iZenarrdqnvpc4Z ~]# docker exec -it mysql /bin/bash
root@7b96a24b92c2:/# mysql -u root -p #{123456}
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 14
Server version: 8.0.18 MySQL Community Server - GPL
Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
如果想要修改root密码的话，直接把root密码置空随后修改密码。