Add CNAME to pages deploy

Author: addshore

.github/workflows/pages.build.yml

@@ -15,4 +15,5 @@ jobs:
       env:
         ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         BUILD_SCRIPT: npm i && npm run build
-        BUILD_DIR: .vuepress/dist/
+        BUILD_DIR: .vuepress/dist/
+        CNAME: www.wbstack.com