fix: proper dinamicaly listen port

index.ts

@@ -48,4 +48,4 @@ app.get("/favico.ico", (_req, res) => {
   res.sendStatus(404);
 });
 
-app.listen(3000, () => console.log("Server running in port 3000"));
+app.listen(process.env.PORT || 3000, () => console.log("Server running in port 3000"));