1.查看容器
docker container ls
2.进入容器
docker exec -it 容器id bash
3.登录mysql
mysql -h localhost -u root -p
4.授权
mysql8.0以下
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'root' WITH GRANT OPTION;
mysql8.0
grant all privileges on *.* to 'root'@'%' ;
刷新
flush privileges;