message: Fix perf regression in docs build
diff: "build:copy": "npm run build:copy:api && npm run build:copy:fluid",
  "build:copy:api": "copyfiles -f \"api-pages/**\" api/",
  "build:copy:fluid": "copyfiles -f \"node_modules/@microsoft/fluid-local-web-host/dist/**\" .vuepress/public/fluid/fluid-local-web-host && copyfiles -f \"node_modules/@fluid-example/sudoku/dist/**\" .vuepress/public/fluid/sudoku && copyfiles -f \"node_modules/@fluid-example/diceroller/dist/**\" .vuepress/public/fluid/diceroller && copyfiles -f \"node_modules/@fluid-example/todo/dist/**\" .vuepress/public/fluid/todo && copyfiles -f \"node_modules/@fluid-example/badge/dist/**\" .vuepress/public/fluid/badge",
  - "build:vuepress": "cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vuepress build --dest ./dist --cache .cache",
  + "build:vuepress": "cross-env NODE_OPTIONS=\"--max-old-space-size=8192\" vuepress build --workers 7 --dest ./dist --cache .cache",
  "clean": "rimraf api dist .vuepress/public/fluid/*/**",
  "lint": "vuepress check-md",
  "start": "npm run build:copy && node buildDocs.js && npm run start:vuepress",
  