$ sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
yum install docker
systemctl start docker
docker run hello-world
5、配置阿里镜像仓库
vim /etc/docker/daemon.json
vim /etc/docker/daemon.json
{
"registry-mirrors": ["https://qsicl1hp.mirror.aliyuncs.com"]
}
systemctl daemon-reload
systemctl restart docker