Run it on a server (again)

[vorburger]

This (https://www.learn.study) used to run on a server (oasis.learn.study) but hasn't anymore, in years.

The goal of this issue is to bring it back to life! 😄

@edewit

[vorburger]

https://github.com/OASIS-learn-study/kubernetes.oasis.learn.study

[vorburger]

oasis1.learn.study

[vorburger]

Add CI/CD

[vorburger]

Re-opening, because it's actually (still, rather not anymore) running on a server... we can (re) do this after #424.