Templating tools (like Helm) for complex stacks?

[trevorswanson]

Does anyone use any sort of templating tools to manage large or complex sets of stacks?

I use k8s at work and use Helm templates extensively but k8s would be overkill for my single server at home -- however I'd love to have something that would let me template my compose files! Right now I'm using lots of "extends" and "include" in each compose file but I feel like I'm starting to outgrow that a little bit.

Ideally I'd have some sort of GitHub Actions job that takes all my templates and renders them into a directory that doco-cd watches.