Docker registry 的七牛驱动
通过Docker hub可以直接安装运行：
docker run –rm \ -e SETTINGS_FLAVOR=qiniustorage \ -e QINIU_BUCKET=YOUR_BUCKET \ -e QINIU_ACCESSKEY=YOUR_ACCESSKEY \ -e QINIU_SECRETKEY=YOUR_SECRETKEY \ -e QINIU_DOMAIN=YOUR_BUCKET_DOMAIN \ -p 5000:5000 \ --name registry \ zhangpeihao/docker-registry-qiniu
