add proxy to local env to mimic deploy environment

package.json

@@ -1,8 +1,13 @@
 {
   "scripts": {
-    "dev": "concurrently -n plugin,webapp,server \"npm --prefix ./plugin run dev\" \"npm --prefix ./webapp run dev\" \"npm --prefix ./server run dev\""
+    "proxy": "node proxy.js",
+    "dev": "concurrently -n plugin,webapp,server,proxy \"npm --prefix ./plugin run dev\" \"npm --prefix ./webapp run dev\" \"npm --prefix ./server run dev\" \"npm run proxy\""
   },
   "dependencies": {
     "concurrently": "^7.2.2"
+  },
+  "devDependencies": {
+    "express": "^4.18.1",
+    "http-proxy-middleware": "^2.0.6"
   }
 }

proxy.js

@@ -0,0 +1,25 @@
+const express = require("express");
+const { createProxyMiddleware } = require("http-proxy-middleware");
+
+const app = express();
+
+app.use(
+  "/api/",
+  createProxyMiddleware({
+    target: "http://localhost:8080",
+    changeOrigin: true,
+  })
+);
+
+app.use(
+  "/",
+  createProxyMiddleware({
+    target: "http://localhost:3000",
+    changeOrigin: true,
+  })
+);
+
+app.listen(5000);
+console.log("Reverse proxy listening at http://localhost:5000");
+
+// http://localhost:3000/api/foo/bar -> http://www.example.org/api/foo/bar