注意：curl命令中的 “-u geostack-dib:123@Abc.com” 参数为registry账号密码，请自行修改或删除
1、修改/etc/docker/registry/config.yml配置文件并重启registry
storage:
delete:
enabled: true
2、获取标签列表
curl -u geostack-dib:123@Abc.com http://172.16.103.118:5000/v2/centos/tags/list
3、获取镜像摘要digest
curl -u geostack-dib:123@Abc.com -I -H "Accept: application/vnd.docker.distribution.manifest.v2+json" http://172.16.103.118:5000/v2/centos/manifests/7.6.1810
4、根据digest删除镜像
curl -u geostack-dib:123@Abc.com -I -X DELETE http://172.16.103.118:5000/v2/centos/manifests/sha256:747b2de199b6197a26eb1a24d69740d25483995842b2d2f75824095e9d1d19eb
5、如果当前镜像的标签全部删除完毕则需要执行此步骤
docker exec registry rm -rf /var/lib/registry/docker/registry/v2/repositories/centos
6、调用registry gc清理无效blobs
docker exec registry registry garbage-collect /etc/docker/registry/config.yml
原文：https://www.cnblogs.com/nihaorz/p/12979648.html