>Once the cluster is stable and you are comfortable bringing it up and tearing it down >K8s wants a docker container registry, you really don't want to run that on your cluster in the beginning, but once your cluster's secure, why not!

I'm betraying my ignorance here, but how does this work? If you're running the registry in your cluster, and you tear down your cluster (and the registry with it), how do you rebuild the cluster without being able to pull images?