Skip IBS integration for forked repos

[angelabriel]

Is it possible to skip the IBS integration in the CI pipeline of the premium repo, if it is a fork?
From my point of view it does not make sense to have an IBS integration for changes I'm doing in my forked repository - even on the main branch. So at the moment the pipeline failed, because I didn't set any of the needed environment variables. But it would be nice, if we simply can skip these part of the pipeline. Maybe CI_PROJECT_FORK_PATH can help in that case.