安装Docker

https://docs.docker.com/engine/install/

添加 docker 阿里云镜像库

[root@localhost docker_zk]# yum-config-manager --add-repo https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror
adding repo from: https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
grabbing file https://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
[root@localhost docker_zk]#

或者添加官方库

[root@your-vps ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror, priorities
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo
[root@your-vps ~]#

下载新增库的元数据并使其可用

[root@localhost docker_zk]# yum makecache fast
......
[root@localhost docker_zk]#

Linux 安装 docker 引擎

[root@localhost docker_zk]# yum install -y docker-ce docker-ce-cli containerd.io
......
[root@localhost docker_zk]# docker -v
Docker version 20.10.17, build 100c701
[root@localhost docker_zk]#