Respect the Gradio runtime server port

app.py

@@ -674,4 +674,4 @@ with gr.Blocks(title="Quickference") as demo:
 if __name__ == "__main__":
     import uvicorn
     threading.Thread(target=expire_sessions, daemon=True).start()
-    uvicorn.run(create_server(), host="0.0.0.0", port=7860, access_log=False)
+    uvicorn.run(create_server(), host="0.0.0.0", port=int(os.environ.get("GRADIO_SERVER_PORT", "7860")), access_log=False)