Private registry support on Megalos

[GioBar00]

Feature Description

It would allow the use of images contained in private registries that one might not want to be available to the public.

To add private registry access in Kubernetes, it is required that a kubernetes.io/dockerconfigjson secret is created.
Furthermore an imagePullSecrets specification needs to be added to the pods or to a service account.

The problem is that Kubernetes secrets are namespaced so the Kubernetes secret needs to be added after the namespace is created, but before the pods are deployed. This becomes unfeasible when starting a Kathará lab.

Solution

I have created a pull request #282 with a possible solution.

[tcaiazzi]

Hi @GioBar00,

Thanks for the PR and the help! We really appreciate it!

We will review the changes to merge them as soon as possible.

Ciao,
Tommaso