Support running in a sub-directory of a repo for microservices/components

[kadraman]

Enhancement Request

The current implementation only seems to support running from the "root" of the GitHub repo. With a monorepo that contains multiple microservices or components in subdirectories the scancentral package command will package up the whole repository.

I believe GitHub Actions supports working-directory for run shell commands and scripts but uses actions need to implement their own approach, maybe something like:

uses: fortify/github-action@v1
with:
    sast-scan: true
    ....
    working-directory: microservice1
...

[rsenden]

This will come automatically with fortify/github-action@v3 once we start using fcli action run ci (see #75). Depending on how long it takes us to get to fortify/github-action@v3, we may want to consider implementing support for a SOURCE_DIR environment variable natively in the GitHub Action, which is an enhancement that we could consider for fortify/github-action@v2. At the moment, I'm not planning any further updates to fortify/github-action@v1.