some fixes?

docker/docker-compose.prod.yml

@@ -1,5 +1,3 @@
-version: "3.8"
-
 services:
   redis:
     image: redis:7.4.2-alpine
@@ -18,8 +16,10 @@ services:
       context: ..
       dockerfile: rad/Dockerfile.prod
     restart: always
+    # Use COMPOSE_ENV to select which env file to load (defaults to 'prod').
+    # Example: COMPOSE_ENV=dev docker compose -f rad/docker/docker-compose.prod.yml -f rad/docker/docker-compose.dev.yml up -d
     env_file:
-      - ../.env.prod
+      - ../.env.${COMPOSE_ENV:-prod}
     environment:
       - DJANGO_SETTINGS_MODULE=rad.settings.production
     depends_on: