Adds a `test-postgres-docker-logs` Make target that dumps the test
PostgreSQL container's logs via `docker logs`. The container already
logs every statement to stderr (`log_statement=all`, no
`logging_collector`), so Docker captures them and no volume mounting or
reconfiguration is needed.
The CI `gen` job now starts the container with `make
test-postgres-docker` before `make gen`, collects the logs at the end
(always, even on failure), and uploads them as the `gen-postgres-logs`
artifact to help debug generation issues that depend on the database.
Refs: https://github.com/coder/internal/issues/1568
<sub>Opened by Coder Agents on behalf of @spikecurtis.</sub>
Spike Curtis
792afc0842