fix: locate PostgreSQL binaries in Unraid image

scripts/unraid_aio_entrypoint.sh

@@ -3,7 +3,7 @@ set -euo pipefail
 
 pg_data=/app/local/postgres-aio17
 redis_data=/app/local/redis-aio
-pg_bin="$(dirname "$(readlink -f "$(command -v pg_config)")")"
+pg_bin="$(pg_config --bindir)"
 fresh_database=0
 
 mkdir -p "$pg_data" "$redis_data" /app/media /app/logs /tmp/celery

tests/unit/test_deployment_configuration.py

@@ -28,7 +28,7 @@ def test_unraid_uses_one_dockerman_container_with_ui_metadata() -> None:
     entrypoint = (ROOT / "scripts" / "unraid_aio_entrypoint.sh").read_text(encoding="utf-8")
     assert "python:3.13-slim-trixie" in dockerfile
     assert "postgres-aio17" in entrypoint
-    assert "command -v pg_config" in entrypoint
+    assert "pg_config --bindir" in entrypoint
 
 
 def test_runtime_is_compatible_with_read_only_container() -> None: