Fixed cannot get / error

.gitignore

@@ -0,0 +1,2 @@
+
+/node_modules

proxy.js

@@ -1,13 +1,18 @@
 const express = require("express");
 const axios = require("axios");
 const cors = require("cors");
+const path = require("path");
 
 const app = express();
 const PORT = 3000;
 
 app.use(cors());
 app.use(express.json());
 
+app.get("/", (req, res) => {
+  res.sendFile(path.join(__dirname, "index.html"));
+});
+
 app.post("/api/mav", async (req, res) => {
   try {
     const response = await axios.post(
@@ -26,6 +31,6 @@ app.post("/api/mav", async (req, res) => {
   }
 });
 
-app.listen(PORT, () => {
-  console.log(`Proxy server listening on http://localhost:${PORT}`);
-});
+app.listen(PORT, "0.0.0.0", () => {
+  console.log(`Proxy server listening on http://0.0.0.0:${PORT}`);
+});