1、以busybox镜像为例docker pull busyboxdocker images首先下载了一个busybox镜像，如图
2、给镜像打一个标签docker tag busybox harbor.k8s-dev.com/library/busybox:guozifeng
3、将新的镜像push到harbor仓库
4、删除本地镜像docker rmi harbor.k8s-dev.com/library/busybox:guozifeng
5、重新从harbor下载镜像docker pullharbor.k8s-dev.com/library/busybox:guozifeng
6、ok，完工
