In our stack we use a custom CI runner and that's the image we give to gitlab-ci, so it's easy to just test locally. Not sure what the story is with GHA, but ge

In our stack we use a custom CI runner and that's the image we give to gitlab-ci, so it's easy to just test locally. Not sure what the story is with GHA, but generally I try to make sure everything fits into one script so I can just test that. A more fun/hacky option is opening a reverse shell on the CI box. I was even able to get it working through ngrok to my local machine.