#1.ubuntu
sudo apt-get update
sudo apt-get install docker.io
#2.centos
#yum update
#yum install -y yum-utils device-mapper-persistent-data lvm2
#yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo #官方
#yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo #阿里云
yum list docker-ce --showduplicates | sort -r
$ sudo yum install docker-ce #由于repo中默认只开启stable仓库，故这里安装的是最新稳定版17.12.0
$ sudo yum install <FQPN> # 例如：sudo yum install docker-ce-17.12.0.ce
$ sudo systemctl start docker
$ sudo systemctl enable docker
#下载镜像
docker pull daocloud.io/centos:7
docker pull daocloud.io/ubuntu:18.04
docker pull daocloud.io/alpine
docker pull daocloud.io/debian
docker pull registry.docker-cn.com/library/ubuntu:18.04
