[wish] --verbose shows which line number triggered WARN

[stappersg]

What would you like to be added?

When adding --verbose to kompose -f compose.yaml convert are DEBUG lines shown. None of those DEBUG lines provide any information which part of compose.yaml is being converted.

Why is this needed?

It will help understanding a line like:

WARN Ignoring user directive. User to be specified as a UID (numeric).

(Thing is that my compose.yaml has no "user directive".)