Update app.py

app.py

@@ -640,9 +640,10 @@ def build_interface() -> gr.Blocks:
 
 if __name__ == "__main__":
     interface = build_interface()
+    server_port = int(os.getenv("GRADIO_SERVER_PORT") or os.getenv("SERVER_PORT") or "7860")
     interface.launch(
         server_name="0.0.0.0",
-        server_port=7860,
+        server_port=server_port,
         theme=gr.themes.Soft(),
         css=".gradio-container {max-width: 1200px; margin: auto;}",
         footer_links=["gradio", "settings"],