###需求详情
MECM需要支持系统自有的容器镜像仓库，MECM管理面支持配置镜像仓库信息
MECM support its own docker repo, MECM admin portal should support the docker repoinfo config.
MECM支持从Appstore同步应用，同步时，将应用镜像同步到MECM的镜像仓库。（注意，如果MECM镜像仓库中已经有该应用镜像且内容未改变，可以不需要重复同步，确保速度）
MECM support synchronize the app from appstore, and also pull the docker image from appstores repo and save to MECM's repo.
If the docker image already exist(no change), we can directly return success to save the sync time(so that when we do demo it will not take a long time to sychronize the image.)
MECM支持分发应用时，将应用镜像从MECM镜像仓库到边缘的集群中。（注意，如果边缘节点上已经有该应用镜像且内容未改变，可以不需要重复同步，确保速度）
MECM distribute the app package, MECM should support to distribute the image from centrilized repo to the edge K8s cluster.
If the docker image already exist in the edge , we wont do it again to save the time (for the demo we can show distrubite quickly)

MECM Portal should get the package List from APM/inventory insteadof from appstore.

###是否涉及其他模块
Developer ,AppStore, Installer
###是否需要刷新资料
Yes
###工作量（预估代码行）
1.5K