Dockerfile templates always cause confusion

[kannon92]

For Kueue, JobSet, LWS and Instaslice-operator, we find that the default template for Dockerfiles does not age very well.

https://github.com/kubernetes-sigs/kubebuilder/blob/master/testdata/project-v4-with-plugins/Dockerfile

We notice that when developers add new folders to the repo, they forget to add them to the Dockerfile.

We have started just copying the folder (COPY . .) and using that instead.

Can we change the template to do this by default?

[kannon92]

Opened up #4525 for a discussion.

[Kavinjsir]

Hey @kannon92 thx for the propose, I left a comment at your pr:
#4525 (comment)

[camilamacedo86]

Hi @kannon92

Thank you a lot for your contribution 🥇 and for looking to make kubebuilder

But as@Kavinjsir pointed out: #4525 (comment)
Also, see my comment: #4525 (comment)

What you suggested does not seem to align with Docker's best practices: https://docs.docker.com/build/building/best-practices/#dont-install-unnecessary-packages

Therefore, I do not think that we should not move forward here.
Does that make sense ?

So, I hope that you do not mind, but I am closing this one and the PR as deferred