ScanCode.io: need to scan for license inside a detected container package

[pombredanne]

It is important to have an option to scans the files of a detected package.
We should run this scans for each set of package files separately and eventually compute summaries there.
Ideally this would be a "group" tag on extra pipeline steps

[pombredanne]

@AyanSinhaMahapatra @tdruez can you guys look into this?

[AyanSinhaMahapatra]

We should run this scans for each set of package files separately

Should this part be added first and then the following

and eventually compute summaries there.

Added later, or should this be done together? Note that the first part is a much smaller change.