yum update
1、yum安装
1).添加yum仓库
tee /etc/yum.repos.d/docker.repo <<-EOF
> [dockerrepo]
> name=Docker Repository
> baseurl=https://yum.dockerproject.org/repo/main/centos/7
> enable=1
> gpgcheck=1
> gpgkey=https://yum.dockerproject.org/gpg
> EOF
2).安装
yum -y install docker-engine
2、脚本安装
curl -fsSL https://get.docker .com/|sh
service docker start