[bitnami/template] Add scripts and instructions for generating new charts from the template

[dan-hill2802]

Description of the change

Add a means to automate much of the effort in creating new charts from the template chart

Benefits

Reduced effort in creating new charts. More consistency in new charts.

Possible drawbacks

Feature should work on Linux and Mac operating systems, but not Windows. Windows users should use WSL (Windows Subsystem Linux) or a VM.

Applicable issues

• Potentially fixes Want a tool to generate helm application templates with one click #20350

Additional information

Requires make and docker

Checklist

• Title of the pull request follows this pattern [bitnami/<name_of_the_chart>] Descriptive title
• All commits signed off and in agreement of Developer Certificate of Origin (DCO)

[andresbono]

Thank you for your contribution! I have just added suggestions for minor typo fixes to be addressed. Could you please check them?

We will give a more thorough review on a second round of review.

Thank you so much again!

[dan-hill2802]

Thank you for your contribution! I have just added suggestions for minor typo fixes to be addressed. Could you please check them?

We will give a more thorough review on a second round of review.

Thank you so much again!

All issues now addressed.

[andresbono]

Thank you for addressing the minor suggestions, @dan-hill2802. Having another look to the PR, I wonder if 3 shell scripts plus a Makefile isn't too much for the relatively simple task we want to accomplish with them. I think it would suffice with a single shell script under ./template/. The feature is not going to be part of any CI/CD action for now. What do you think?

[dan-hill2802]

Thank you for addressing the minor suggestions, @dan-hill2802. Having another look to the PR, I wonder if 3 shell scripts plus a Makefile isn't too much for the relatively simple task we want to accomplish with them. I think it would suffice with a single shell script under ./template/. The feature is not going to be part of any CI/CD action for now. What do you think?

Hi @andresbono, just to confirm I understand, are you suggesting refactoring the three scripts into 3 separate functions within one script file then executed from make like this: ./template/run.sh new-chart $$chart_name and ./template/run.sh render-template $$chart_name? If so, then that makes sense and I can make that change.

[andresbono]

Hi again @dan-hill2802, after gathering more feedback from others teammates about this feature and a thorough discussion, even simplifying the logic as I'm suggesting, we consider the PR is not going to add much value in the end and we will not merge it.

These are some of the main reasons:

• The template dir is not supposed to be converted into a chart directly for basic scaffolding, (kind of what helm create does). We can think of it more as a library where you pick the specific templates you need after the architecture of the chart is defined.
• It will increase the maintenance load, more logic to keep up-to-date for something that is not going to add much value.

I hope you understand, we really appreciate your efforts on putting this PR together. Do not hesitate to submit new contributions!!

[dan-hill2802]

Thanks for letting me know @andresbono. It's a little disappointing, but I understand your points and agree that it can never be an automated process, as creating a chart requires many architectural decisions. The goal was mainly to reduce the effort and chance of error while copying the template and replacing the placeholders.
I will maintain my fork with this feature. If it is deemed useful in the future it should still be able to merge, as I don't anticipate many conflicts.