Feat: map database server port to be accessed from outside Docker.

dev.docker-compose.yml

@@ -10,6 +10,8 @@ services:
       - POSTGRES_USER=user
       - POSTGRES_PASSWORD=pass
       - POSTGRES_DB=project-allocator
+    ports:
+      - 6543:5432
   project-allocator:
     image: project-allocator
     environment: