[Deployment] Ignore distributed assets by default

Author: Jovert Lota Palonpon

.gitignore

@@ -1,3 +1,9 @@
+public/assets.json
+public/service-worker.js
+public/fonts/*
+public/img/*
+public/css/*
+public/js/*
 .php_cs.cache
 dump.sql
 nginx.conf

package.json

@@ -7,7 +7,8 @@
         "watch": "npm run development -- --watch",
         "watch-poll": "npm run development -- --watch-poll",
         "prod": "npm run production",
-        "production": "node_modules/.bin/webpack --env.NODE_ENV=production --no-progress --hide-modules --colors"
+        "production": "node_modules/.bin/webpack --env.NODE_ENV=production --no-progress --hide-modules --colors",
+        "heroku-postbuild": "npm run prod"
     },
     "dependencies": {
         "@babel/runtime": "^7.3.1",