Github Action for checking image paths

[TannerGilbert]

Currently, it can be hard to get the image path inside the README.md, and artifacthub-pkg.yml correct as URLs need to be used, and they can't be checked for correctness as they only start existing after merging into main. Therefore we should create an action that checks the URLs and maybe also can be executed manually.

[agardnerIT]

The other issue right now is that when writing the readme and artifacthub files, any local previews do not work for the same reason you point out above.

If possible I’d like to see the action or automation do the opposite: allow users to write relative paths locally which are then adjusted to the full urls when the pr is merged. That way, both production is protected from relative urls and local previews work.

[TannerGilbert]

@agardnerIT I like the idea. @christian-kreuzberger-dtx what do you think about this?

[christian-kreuzberger-dtx]

Not sure about that. Do we have any idea how other artifacthub repositories handle that? Clearly they would have the same problem, right?

[TannerGilbert]

@christian-kreuzberger-dtx I just looked at some other repositories implementing AH integrations, but most of them don't have any automation. So I'll ask the Artifacthub team directly.