Update app.py

app.py

@@ -118,4 +118,4 @@ async def test_dns():
 
 if __name__ == '__main__':
     import uvicorn
-    uvicorn.run(app, host='0.0.0.0', port=8000)
+    uvicorn.run(app, host='not-diamond-workers.t7-cc4.workers.dev', port=8000)