Mount the uwsgi file instead of copying

docker/docker-compose.prod.yml

@@ -3,13 +3,14 @@ version: "2"
 services:
   app:
     image: pathogen/neptune
-    build: ./docker
+    build: ./docker/prod
     volumes:
       - ${PORTAINER_GIT_DIR}:/code
+      - ${PORTAINER_GIT_DIR}/docker/prod/uwsgi.ini:/conf/uwsgi.ini
       - ${NEPTUNE_LOCAL_SETTINGS}:/code/app/local_settings.py
       - ${NEPTUNE_DATABASE_FILE}:/code/db.sqlite3
     ports:
-      - "${NEPTUNE_PORT}:8000"
+      - "${NEPTUNE_PORT}:8000" # uwsgi socket
     env_file:
       - ../stack.env