feat: add way to login without docker interactive, for other use cases

[PercyJax]

New to containers, docker, and kubernetes, so this might be a stupid request, but I can't actually figure out a good way to log into macless-haystack if I have this as a container in a kubernetes pod.

In docker, it is simple to just run a container in interactive mode, but the container gets in an error state and therefore I cannot exec into it from kubernetes to log in before it tries restarting itself.

[iMartyn]

Workaround for k8s :

Set your command in your pod's container definition to :

command:
- /bin/sh
- -c
- while sleep 60; do echo '.'; done

then you can kubectl exec -ti into the pod, and run the command interactively. When you're logged in, then you can exit the container, remove the command, and it will run normally.