Docker安装

官方文档：

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

1、先卸载旧版本

sudo yum remove docker 
                  docker-client 
                  docker-client-latest 
                  docker-common 
                  docker-latest 
                  docker-latest-logrotate 
                  docker-logrotate 
                  docker-engine

2、安装yum-utils 添加官方镜像源

sudo yum install -y yum-utils

sudo yum-config-manager 
    --add-repo 
    https://download.docker.com/linux/centos/docker-ce.repo

3、安装

sudo yum install docker-ce docker-ce-cli containerd.io

4、启动docker

sudo systemctl start docker

5、运行docker ps

root_D-v024@:~# docker ps
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

6、修改docker镜像源为国内地址

vi /etc/docker/daemon.json
{
"registry-mirrors": ["http://hub-mirror.c.163.com"]
}