Option to skip fs checks?

[apenney]

First, thank you for the plugin! I was working on setting this up tonight in a context where I only want container scanning, not fs scanning.

I tried a bunch of options such as:

skip-dirs: "/*"
skip-files: "/*"

Or:

skip-dirs: "**"
skip-files: "**"

But none of these seemed to successfully skip files. I was considering adding a skip-fs: true/false option and making the script that runs the fs check test for that variable but I wanted to run that idea past you first in case you have an easier way to achieve what I'm trying to do without changes?

[JAORMX]

@apenney I think having a direct flag that skips the fs check is fine! Thanks for taking a look and taking the time to write this up. Let me know if you need help and I'll make sure to review your PR.