@maschinentraum pretty much right after this gitlab announcement was posted, a gitlabber posted an unofficial CI tool they wrote for running gitlab CI/CD pipelines without gitlab.
https://gitlab.com/gitlab-org/gitlab-runner/-/work_items/2797#note_3339902449
what's interesting is it makes use of the official gitlab-runner connected to a mock gitlab rest api service... i imagine a similar approach could be used to integrate gitlab ci/cd into another git forge via an intermediary service, potentially giving folks who are locked into their CI/CD an off-ramp to something else.

