Deploy to Heroku

package.json

@@ -5,7 +5,8 @@
   "dependencies": {
     "react": "^16.13.1",
     "react-dom": "^16.13.1",
-    "react-scripts": "3.4.1"
+    "react-scripts": "3.4.1",
+    "serve": "^11.3.2"
   },
   "devDependencies": {
     "@types/react": "^16.9.41",
@@ -15,7 +16,8 @@
     "typescript": "^3.9.5"
   },
   "scripts": {
-    "start": "react-scripts start",
+    "start": "serve ./build",
+    "dev": "react-scripts start",
     "build": "env GENERATE_SOURCEMAP=false react-scripts build",
     "eject": "react-scripts eject"
   },