fix: safe sub directory

[jordanamr]

Fixes #148

[jordanamr]

If anyone is stuck on that issue and rely on that action, we forked and fixed that at our company while the author is away :)
Feel free to use skillupco/[email protected]

[sammcj]

@jordanamr are the $GITHUB_WORKSPACE and $SOURCE variables definitely available inside the containers?

[jordanamr]

@jordanamr are the $GITHUB_WORKSPACE and $SOURCE variables definitely available inside the containers?

Unsure. They are used and/or defined in the entrypoint.sh.
However, I can confirm that this fix is used in production at our company since April without any issues.

[sammcj]

OK thanks @jordanamr, I think it should be OK, I've been added to the list of maintainers for this repo so am happy to approve and merge it, my only concern is that there aren't any tests for this project (yet) so I'm flying blind a bit.

If I was to merge and let it release - would you be happy to switch back to this main repo and confirm that your issue is resolved for me?