minify staging build

package.json

@@ -5,9 +5,9 @@
   "scripts": {
     "serve": "vue-cli-service serve",
     "build": "vue-cli-service build",
-    "build-staging": "vue-cli-service build --mode=test",
+    "build-staging": "NODE_ENV=production vue-cli-service build --mode=test",
     "test:unit": "vue-cli-service test:unit",
-    "test:e2e": "vue-cli-service test:e2e --mode test",
+    "test:e2e": "vue-cli-service test:e2e --mode=test",
     "lint": "vue-cli-service lint",
     "preinstall": "npx npm-force-resolutions",
     "test": "npm run test:unit && npx vue-cli-service test:e2e --headless",