Self hosting your own CI/CD is the key for OP. Littering is solved too because litter is only a problem on long running servers, which is an anti-pattern in a CI/CD environment.

Exactly. They should be learning a variety of different operating systems and apps. However, that implies that teachers are familiar with the tech.

As long as the web client works, I’ll use teams from inside Firefox thank you very much.

We use renovate mostly for container images and nuget/npm/maven dependencies.