invalid ignore file should be reported

[itaysk]

Description

Not a critical issue but when using --ignorefile badpath.yaml with an invalid path, Trivy silently ignores the error. I think it should result in an error or a warning. For reference, the simlar flag --ignore-policy will not just error but also stop trivy.

Target

None

Scanner

None

[simar7]

Yes, I can't seem to find the previous discussion that we had in general regarding Trivy's behavior when supplied user input isn't valid/missing. But I think in general, we should warn or inform the user about such a situation so that the scan results or Trivy's behavior isn't questioned.

[simar7]

We already have an issue to track this #7093