In #93 there was a misalignment between the declared minor and the actual pg version installed in the container. This was caused by the container release happening after the pgdg package release, with our rebuild happening in between.

PostgreSQL 16.2 was out on 2024-02-08. The postgresql community image was out on 2024-02-12. pgvector 0.6.0 was packaged on 2024-02-09, with the following dependencies on bullseye:

Depends: postgresql-16, postgresql-16-jit-llvm (>= 13), libc6 (>= 2.14)

However, that dependency wasn't satisfied by postgresql-16.1

Version: 16.1-1.pgdg110+1
Provides: postgresql-16-jit-llvm (= 11), postgresql-contrib-16

And 16.2 was already available, so it upgraded.

This can happen on every minor upgrade. We should prevent unwanted minor upgrades.