Merge branch 'main' of github.com:carpentriesoffline/CW24_lightning_talk

.github/workflows/CW24_lightning_talk.yml

@@ -10,13 +10,20 @@ jobs:
         uses: xu-cheng/latex-action@v3
         with:
           root_file: cw24.tex
+          latexmk_use_lualatex: true
       - name: Upload slide PDF file
         uses: actions/upload-artifact@v4
         with:
           name: pdf
           path: cw24.pdf
+      - name: Get timestamp
+        id: timestamp
+        run: echo "::set-output name=timestamp::$(date +'%Y%m%d%H%M%S')"
+      - name: Create tag
+        run: git tag -a v${{ steps.timestamp.outputs.timestamp }} -m "Version v${{ steps.timestamp.outputs.timestamp }}"
+      - name: Push tag
+        run: git push origin --tags
       - name: Release
         uses: softprops/action-gh-release@v2
-        if: startsWith(github.ref, 'refs/tags/')
         with:
           files: cw24.pdf