[docker安装mysql5.7]

1. docker pull mysql:5.7.37

2. docker run -d -p 3306:3306 --name chl-mysql --privileged=true --restart=always -v /opt/volumes/mysql/conf:/etc/mysql/conf.d -v /opt/volumes/mysql/logs:/logs -v /opt/volumes/mysql/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=root mysql:5.7.37

3. docker exec -it chl-mysql bash 进到容器内部，cd /etc/mysql目录下，修改my.cnf文件，加入如下两行：

[mysql]
default-character-set=utf8mb4
[mysqld]
character_set_server=utf8mb4
4. docker restart chl-mysql