CentOS 8 安装 docker
1.添加docker地址
curl -o /etc/yum.repos.d/docker-ce.repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
2.更新yum升级地址
修改 /etc/yum.repos.d/CentOS-Linux-Base.repo，CentOS-Linux-AppStream.repo，CentOS-Linux-Extras.repo
屏蔽#mirrorlist
# CentOS-Linux-Base.repo，修改如下
baseurl=https://mirrors.aliyun.com/centos/$releasever-stream/BaseOS/$basearch/os/
# CentOS-Linux-AppStream.repo
baseurl=https://mirrors.aliyun.com/centos/$releasever-stream/AppStream/$basearch/os/
# CentOS-Linux-Extras.repo
baseurl=https://mirrors.aliyun.com/centos/$releasever-stream/extras/$basearch/os/
3.安装
yum install docker-ce
4.启动服务
systemctl restart docker
安装可能会提示冲突，使用下面命令
yum install docker-ce --allowerasing