Revert "Replace manual ruby/jekyll with action"

This reverts commit bd22e2a.

Author: dylanhand

.github/workflows/docsygen.yml

@@ -22,17 +22,25 @@ jobs:
       url: ${{ steps.deploy.outputs.page_url }}
     steps:
       - uses: actions/checkout@v6
+        with:
+          repository: giellalt/giellalt.github.io
 
-      - name: Setup Pages
-        uses: actions/configure-pages@v6
-
-      - name: Build with Jekyll
-        uses: actions/jekyll-build-pages@v1
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
         with:
-          token: ${{ secrets.GIELLALT_DOCS_GH_TOKEN }}
+          ruby-version: '3.1'
+          bundler-cache: true
+
+      - name: Build Jekyll site
+        env:
+          JEKYLL_GITHUB_TOKEN: ${{ secrets.GIELLALT_DOCS_GH_TOKEN }}
+        run: |
+          bundle exec jekyll build
 
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v5
+        with:
+          path: _site
 
       - name: Deploy to GitHub Pages
         id: deploy