linux安装docker

yum update

#添加yum仓库
[dockerrepo]
name=Docker  Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg

#安装docker
yum install -y docker-engine

systemctl start docker.service

sudo systemctl enable docker