Update README with server IP and domain configuration

Replaced `localhost` references with `<SERVER_IP>` or custom domain options. This clarifies instructions for setting up the application on a remote server.

README.md

@@ -74,9 +74,9 @@ make up
 
 4. Open:
 
-- Frontend: `http://localhost:5173`
-- Backend API: `http://localhost:8000/api/v1`
-- OpenAPI docs: `http://localhost:8000/docs`
+- Frontend: `http://<SERVER_IP>:5173` (or `https://<your-domain>`)
+- Backend API: `http://<SERVER_IP>:8000/api/v1` (or `https://<your-domain>/api/v1`)
+- OpenAPI docs: `http://<SERVER_IP>:8000/docs` (or `https://<your-domain>/docs`)
 
 Default initial admin (from `.env`):
 
@@ -127,7 +127,7 @@ All variables are defined in `.env.example`.
 - `FRONTEND_PORT`: Host port mapped to frontend container `80`
 - `VITE_API_URL`: API base URL baked into frontend build
   - Proxy/SSL setup: use `/api/v1`
-  - Direct local setup: use `http://localhost:8000/api/v1`
+  - Direct server setup: use `http://<SERVER_IP>:<BACKEND_PORT>/api/v1`
 
 ## API overview (minimum)