We were already checking for whether `POSTGRES_DB` was set to `postgres`, but this was the underlying motivation for that check (and it turns out that this applies for values of at least `template0` and `template1` as well).
Do not remove static postgres libraries from Alpine based images.
This add near 1.4MB to image size, but allow to complie some extentions
like repmgr without errors
Tianon Gravi