updated the host and port

package.json

@@ -10,7 +10,7 @@
     "terser": "3.14.1"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "PORT=3000 react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"