cephadm: Local registry setup
The idea is to optimize cluster deployment time by creating a local registry that will then be used to pull images from other nodes.
One idea is to use the new
service_type: container generic deployment to deploy a registry.
Problem is: we need a ceph cluster in order to deploy the registry.
- Either we call `cephadm deploy ...` in `cephadm bootstrap` manually before starting the first MON,
- or we run bootstrap and modify
container_imageafterwards to point to the correct registry.
Note, we have to modify the registries.conf on all hosts for this to work.