docker启动mysql多实例连接报错Can’t connect to local MySQL server through socket ‘/var/run/mysqld/mysqld.sock’

执行命令如下：

docker run -d -p 3306:3306 --name mysql3306 --restart=always --privileged=true -v /myvolume/mysql-master/log:/var/log/mysql -v /myvolume/mysql-master/data:/var/lib/mysql -v /myvolume/mysql-master/conf:/etc/mysql -e MYSQL_ROOT_PASSWORD=123456 mysql:5.7 docker run -d -p 3307:3306 --name mysql3307 --restart=always --privileged=true -v /myvolume/mysql-master/log:/var/log/mysql -v /myvolume/mysql-master/data:/var/lib/mysql -v /myvolume/mysql-master/conf:/etc/mysql -e MYSQL_ROOT_PASSWORD=123456 mysql:5.7 docker run -d -p 3306:3306 --name mysql330