移除旧版
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-selinux \
docker-engine-selinux \
docker-engine
安装一些必要的工具
yum install -y yum-utils device-mapper-persistent-data lvm2
添加软件源信息
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
更新缓存
yum makecache fast
安装docker
yum -y install docker-ce
设置开机启动
systemctl enable docker
systemctl start docker
验证是否安装成功
docker info
