下载 Docker Engine
https://docs.docker.com/engine/install/centos/
查看系统版本
$ cat /etc/redhat-release
卸载旧docker方式
$ sudo yum remove docker
$ sudo yum remove docker-client
$ sudo yum remove docker-client-latest
$ sudo yum remove docker-common
$ sudo yum remove docker-latest
$ sudo yum remove docker-latest-logrotate
$ sudo yum remove docker-logrotate
$ sudo yum remove docker-engine
安装docker
$ yum -y install gcc
$ yum -y install gcc-c++
$ yum install -y yum-utils
$ yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
$ yum makecache fast
$ yum install docker-ce docker-ce-cli containerd.io docker-compose-plugin
$ systemctl enable docker
$ systemctl status docker
$ systemctl start docker
$ docker version
$ docker run hello-world
$ yum remove docker-ce docker-ce-cli containerd.io docker-compose-plugin
$ sudo rm -rf /var/lib/docker
$ sudo rm -rf /var/lib/containerd