When we added these lines, we needed newer files than PostgreSQL had upstream, but the situation has changed and we were pinned to a specific commit from 2017 - the _oldest_ PostgreSQL release version has a file from 2020.

Update to 17.5, 16.9, 15.13, 14.18, 13.21

Update apt build depend

Add Alpine 3.22 (remove Alpine 3.20)

…ostgres-18

chore: add postgres 18 beta1

This is a pretty large breaking change, which is why this only makes the change in 18+ (which is currently in pre-release stages, and not due for GA until September, and pre-release `PGDATA` directories are officially *not supported* on the GA release anyhow).

Concretely, this changes `PGDATA` to `/var/lib/postgresql/MAJOR/docker`, which matches the pre-existing convention/standard of the `pg_ctlcluster`/`postgresql-common` set of commands, and frankly is what we should've done to begin with, in a classic case of Chesterton's Fence (https://en.wikipedia.org/wiki/Wikipedia:Chesterton%27s_fence).

This also changes the `VOLUME` to `/var/lib/postgresql`, which should be more reasonable, and make the upgrade constraints more obvious.

For any users who have been testing the pre-releases, the simplest way to keep your existing data directory is going to be to add `PGDATA=/var/lib/postgresql/data` as an environment variable on your container or adjust your bind-mount from `/var/lib/postgresql/data` to `/var/lib/postgresql/18/docker`, but the *best* way is going to be to refactor your host directory such that your data lives at `18/docker` inside and you can then mount directly to `/var/lib/postgresql` (possibly setting `PGDATA=/var/lib/postgresql/MAJOR/docker` as well, if you want to go overboard on being explicit).

Change `PGDATA` in 18+ to `/var/lib/postgresql/MAJOR/docker`

See:

- https://salsa.debian.org/postgresql/postgresql/-/commit/eaa9529d8ecb0beaeebeb5b09362dbdf4ce34c0c
  "Make LLVM architectures a inclusion list so it works in the Architecture field."
  (which removes i386, notably)

- https://salsa.debian.org/postgresql/postgresql/-/commit/1d6f624592d18d0cb0d694675037984f0d44b5ae
  "Disable JIT on loong64 and riscv64 again, still segfaulting."

Only install 18+ JIT package on architectures where it's supported