I don’t want it to have any JavaScript

That’s not going to happen. I also don’t understand why you wouldn’t want JavaScript. All the concerns with it are about the times when you access a website by a proprietary software maker and encounter obfuscated and opaque code that you can only with great difficulty reconstruct what it does. But JavaScript “in the right hands”, like on a FOSS website, is perfectly fine and even required to make a webpage that can actually do something more than simply display text or images.

I would personally attempt the Kubernetes cluster if I had that many physical machines!

No. Docker is proprietary

Proprietary software should NOT be taught in schools! We already have way too much of that

+1