https://yum.dockerproject.org/repo/main/centos/7/Packages/
1、wget https://yum.dockerproject.org/repo/main/centos/7/Packages/docker-engine-selinux-1.13.1-1.el7.centos.noarch.rpm
2、wget https://yum.dockerproject.org/repo/main/centos/7/Packages/docker-engine-1.13.1-1.el7.centos.x86_64.rpm
直接安装： rpm -ivh docker-engine-selinux-1.13.1-1.el7.centos.noarch.rpm
rpm -ivh docker-engine-1.13.1-1.el7.centos.x86_64.rpm
docker info