message: build(aio): fix the build script
  `ng build ...` must be the last command on the corresponding yarn script,
  because it needs to be passed extra arguments (such as the target environment)
  in specific cases.
diff: "postinstall": "uglifyjs node_modules/lunr/lunr.js -c -m -o src/assets/js/lunr.min.js --source-map",
  "build-ie-polyfills": "node node_modules/webpack/bin/webpack.js -p src/ie-polyfills.js src/generated/ie-polyfills.min.js",
  "~~check-env": "node scripts/check-environment",
  - "~~build": "ng build --target=production --environment=stable -sm --build-optimizer && yarn sw-manifest && yarn sw-copy",
  + "~~build": "ng build --target=production --environment=stable -sm --build-optimizer",
  + "post~~build": "yarn sw-manifest && yarn sw-copy",
  "~~update-webdriver": "webdriver-manager update --standalone false --gecko false"
  },
  "engines": {
  