1, Ali cloud account login - container mirror service - create a mirror warehouse
2, remember to log in to write a complete catalog warehouse order not to be wrong or else an error
docker login --username=阿里云名字 registry.cn-hangzhou.aliyuncs.com/镜像仓库名（test_jiangxin）
密码
3,例
docker tag daocloud.io/library/centos registry.cn-hangzhou.aliyuncs.com/test_jiangxin/centos:centos7.4
docker push registry.cn-hangzhou.aliyuncs.com/test_jiangxin/centos:centos7.4
docker pull registry.cn-hangzhou.aliyuncs.com/test_jiangxin/centos:centos7.4