[FEATURE]: Print a warning or something if a kubernetes deploy action specifies files which are not found

[spenczar]

Feature Request

Background / Motivation

In #4899, I got pretty confused. I had a kubernetes deploy action which specified a file named jaeger-operator.yml. When I ran the deploy, nothing happened. That's because the file was actually named jaeger-oeprator.yaml - yaml vs yml.

What should the user be able to do?

Get warned when a file is specified that isn't actually found. Maybe throw an error and abort, even.

Why do they want to do this? What problem does it solve?

It's confusing for the tool to proceed happily even if a specified file is missing. It can lead to the false belief that a deploy succeeded.

Suggested Implementation(s)

Dunno! At least warning is good. A fatal error would make sense to me too, but maybe there's some reason to proceed? I don't really know.

How important is this feature for you/your team?

🌹 It’s a nice to have, but nice things are nice 🙂