harbor镜像清理：使用registry:2.6.2-photon garbage-collect

试运行：
docker run -it --name gc --rm --volumes-from registry 192.168.101.123:1603/lego/vmware/registry:2.6.2-photon garbage-collect --dry-run /etc/registry/config.yml

正式运行：
docker run -it --name gc --rm --volumes-from registry 192.168.101.123:1603/lego/vmware/registry:2.6.2-photon garbage-collect  /etc/registry/config.yml