Add health check endpoint and update Docker Compose configuration

- Add HealthCheckView to authapp
- Update authapp/urls.py to include health check
- Update docker-compose.yml for backend services
- Add frontend service to docker-compose.yml
- Add external config for frontend

authapp/views.py

@@ -4,7 +4,7 @@ from rest_framework.authtoken.views import ObtainAuthToken
 from rest_framework.authtoken.models import Token
 from rest_framework.response import Response
 from .serializers import UserSerializer
-from rest_framework.permissions import IsAuthenticated
+from rest_framework.permissions import IsAuthenticated, AllowAny
 from rest_framework import status
 
 from django.http import JsonResponse
@@ -42,3 +42,7 @@ class VerifyTokenView(APIView):
         }, status=status.HTTP_200_OK)
 
 
+class HealthCheckView(APIView):
+    permission_classes = [AllowAny]
+    def get(self, request, *args, **kwargs):
+        return Response({"status": "healthy"})