Update server.js

Author: shashankpandey2070

server.js

@@ -215,4 +215,6 @@ app.post(['/execute', '/submit-code'], async (req, res) => {
 
 
 const PORT = 8080;
-app.listen(PORT, () => console.log(`Server running on port ${PORT}`));
+app.listen(PORT, '0.0.0.0', () =>
+  console.log(`Server listening on ${PORT}`)
+);