We have tested the production image (created by blubber) that is supposed to be published to the wikimedia docker registry and it works well:
$ time docker build -t recommendation-api-prod20230718 . ... Successfully built cff630cecacf Successfully tagged recommendation-api-prod20230718:latest real 6m11.289s user 0m0.152s sys 0m0.176s
$ docker images REPOSITORY TAG IMAGE ID CREATED SIZE recommendation-api-prod20230718 latest cff630cecacf 30 minutes ago 4.6GB
What could be causing this Internal Server Error in the post-merge build?