• IMHO, it should also run "crushtest", not just "installcheck", for thoroughness. Maybe "test" too?

• Tests should run on PostgreSQL 14 and 15. Of course, this would mean stop using credativ/postgresql-build images. Those images haven't been updated in 3 years, so it's probably time to move on to something newer, like perhaps the official postgresql builds. That said, I just e-mailed the maintainer of the credativ/postgresql-build images to see if he would be willing to push similar images for PostgreSQL 14.x and 15.x to Docker Hub. Ugh... I was looking at the GitLab CI. I see the Travis CI is already testing on PostgreSQL 14.x and 15.x. Never mind!