arc42 [1], rendered into whatever format you prefer for reading.
In our case we write asciidoc (sometimes markdown) and render it to HTML for each of the releases, so that a version of the documentation is delivered with the release.
The authors of arc42 also encourage users to set documentation under version control to ensure one can keep the project and its documentation in sync [2].
I am not sure what level of abstraction and automation you are aiming for but there is a pretty neat project for setting up a kubernetes cluster including automatic updates in hetzner [1]. Even if it exceeds your requirements you can scrape it to answer many of your questions.
In our team we develop features across all layers of our different customers applications. Our responsibility reaches from UI/UX design to our CI/CD pipeline, so that we deliver software fast, reliable and tested.
This does not mean that you need to be an expert for all the tasks that come up, so if you love to optimize queries to a PostgreSQL database you are just as welcome as if you are into styling the last pixel of one of our web applications or if you just want to push the average build time of a project even further below 5 minutes from a "git push" to production.
Are you looking for a role with purpose in an open-minded and casual atmosphere? If so, openFORCE is a perfect match!
[1] https://arc42.org/overview [2] https://faq.arc42.org/questions/G-1/