docker 安装
1、安装依赖
yum install -y yum-utils device-mapper-persistent-data lvm2
yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
yum install docker-ce docker-ce-cli containerd.io
2、其他
yum install docker-ce docker-ce-cli
systemctl start docker
docker --version
3、开机自启
systemctl enable docker