1 可以先查看Registry容器下的镜像目录
docker exec registry ls /var/lib/registry/docker/registry/v2/repositories
2 删除Registry容器下指定镜像的目录
docker exec registry rm -rf /var/lib/registry/docker/registry/v2/repositories/要删除的容器名称
3 垃圾回收
docker exec registry bin/registry garbage-collect /etc/docker/registry/config.yml
4 重启Registry容器
docker restart registry