That's my main challenge. You need to be an expert in a language/framework to be able to develop a good Dockerfile. Hopefully, I can get more contributors to join my efforts.
I will draft something and get back to you for feedback.
Btw, I'm building easypanel.io and this is one of my attempts to simplify building docker images. I currently support Cloud Native Buildpacks, but it's quite a black box and people have a hard time using them.