allow other hosts

server.js

@@ -13,7 +13,7 @@ app.get('/', (req, res) => {
   res.send(clientIp);
 });
 
-app.listen(PORT, () => {
+app.listen(PORT, '0.0.0.0', () => {
   console.log(`IP Pinger service running on port ${PORT}`);
   console.log(`Visit http://localhost:${PORT} to see your IP`);
 });