centos7安装docker

docker安装参考地址

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

 卸载旧版本

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

配置仓库

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

安装docker

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

启动docker

systemctl start docker

查看是否启动成功

docker -v

设置开机自启动检查当前已安装的镜像

docker images

设置开机自启动

systemctl enable docker