Keep PR images and instances running

Currently, only instances and images of the scheduled pipeline will be kept.

When starting a new feature and opening a PR, it's easier to debug when the result is not removed.

added OOD Knightly Improvement label

changed the description

added Sprint 23-06 label

assigned to @louistw

changed milestone to %WIP: OOD knightly improvement

mentioned in merge request !40 (merged)

I think the Gitlab review App is what we are looking for

added Sprint 23-07 label and removed Sprint 23-06 label

The first Review App!

mentioned in commit 19e5a790

closed with merge request !40 (merged)