进入docker官网 docker先卸载旧的版本
sudo yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
安装软件包设置存储库
sudo yum install -y yum-utils
sudo yum-config-manager \
--add-repo \
https://download.docker.com/linux/centos/docker-ce.repo
启动docker
sudo systemctl start docker
开机自启
sudo systemctl enable docker
设置一下阿里的镜像加速器
