This is pulled in automatically via `gnupg`, and moved from `Recommends` to `Depends` in https://salsa.debian.org/debian/gnupg2/-/commit/99474ad900a8bcdd0e7b68f986fec0013fc01470, which has been part of `src:gnupg2` since 2.1.21-4 (and every supported version of both Debian _and_ Ubuntu have 2.2.x 😇).

Remove explicit `dirmngr` reference

Alpine 3.18

Downgrade llvm to 15 to fix jit support

Also, remove deprecated/removed `--with-krb5` (deprecated in 8.3, removed in 9.4; postgres/postgres@98de86e).

Add `--enable-option-checking=fatal` to `configure` flags

Add support for multiple (up to two) concurrent Alpine versions

Add postgres 16 beta1

Add Debian bookworm variant

…2-1.pgdg110+1

…110+1

…110+1

…110+1

…3-1.pgdg110+2

Remove PostgreSQL 12 since it is end of life

…110+1

…110+1

…110+1

…110+1

…110+1

…110+1

* Unset NOTIFY_SOCKET when running the temporary server.

Postgres has native support for this notification socket and will write a `READY=1` message once it is ready and accepting connections. Unfortunately, the temporary server used by the `docker-entrypoint.sh` also sends a message on the socket, making it appear as though the container is ready and serving connections when it is not.

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)

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