Centos7.4 安装docker

DNS1=8.8.8.8
DNS2=114.114.114.114
uname -a
 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
yum-config-manager --add-repo https://13.32.54.18/linux/centos/docker-ce.repo
yum list docker-ce --showduplicates | sort -r
yum install -y --setopt=obsoletes=0  docker-ce-17.03.1.ce-1.el7.centos  docker-ce-selinux-17.03.1.ce-1.el7.centos