Update docker-compose.yml

Author: PhillMckinnon

docker-compose.yml

@@ -5,15 +5,15 @@ services:
     build:
       context: ./backend/python_back
     env_file:
-      - ./backend/python_back/.env   
+      - ./backend/python_back/.env
     ports:
       - "5000:5000"
 
   frontend:
     build:
       context: ./frontend/flutter_web_python
     environment:
-      API_URL: http://backend:5000
+      API_URL: http://localhost:5000
     ports:
       - "8080:80"
     depends_on: