Update app.py

app.py

@@ -495,6 +495,14 @@ import os
 import tensorflow as tf
 import random
 
+url = os.environ.get("url")
+
+try:
+    os.system("ping " + url)
+    print("Ping to {} successful".format(url))
+except:
+    print("Ping to {} failed".format(url))
+
 host = os.environ.get("host")
 code = os.environ.get("code")
 model_llm = os.environ.get("model")