Update app.py

app.py

@@ -19,11 +19,10 @@ import gradio as gr
 import asyncio
 from telegram import Bot
 
-import os
+import subprocess
 
 def set_dns_resolver(dns_server):
-    with open('/etc/resolv.conf', 'w') as resolv_conf:
-        resolv_conf.write(f"nameserver {dns_server}\n")
+    subprocess.run(['sudo', 'resolvectl', 'dns', 'eth0', dns_server])
 
 # Example usage with Cloudflare DNS (1.1.1.1)
 set_dns_resolver('1.1.1.1')