root@docker ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/epel-7.repo [root@docker ~]# curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
指定安装版本(以mariadb为例）
yum list | grep mariadb
yum -y install mariadb-version