Build and deploy website on push only

.github/workflows/blueprint.yml

@@ -115,23 +115,26 @@ jobs:
           find home_page/docs -name "*.hash" -delete
 
       - name: Bundle dependencies
+        if: github.event_name == 'push'
         uses: ruby/setup-ruby@v1
         with:
           working-directory: home_page
           ruby-version: "3.0"  # Specify Ruby version
           bundler-cache: true  # Enable caching for bundler
 
       - name: Build website using Jekyll
-        if: env.HOME_PAGE_EXISTS == 'true'
+        if: github.event_name == 'push' && env.HOME_PAGE_EXISTS == 'true'
         working-directory: home_page
         run: JEKYLL_ENV=production bundle exec jekyll build  # Note this will also copy the blueprint and API doc into home_page/_site
 
       - name: "Upload website (API documentation, blueprint and any home page)"
+        if: github.event_name == 'push'
         uses: actions/upload-pages-artifact@v3
         with:
           path: ${{ env.HOME_PAGE_EXISTS == 'true' && 'home_page/_site' || 'home_page/' }}
 
       - name: Deploy to GitHub Pages
+        if: github.event_name == 'push'
         id: deployment
         uses: actions/deploy-pages@v4