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

.github/workflows/CW24_lightning_talk.yml

@@ -1,5 +1,8 @@
 name: Build slide for CW24 lightning talk
-on: [push, pull_request]
+on:
+  push:
+    tags:
+      - '*'
 jobs:
   build_latex:
     runs-on: ubuntu-latest
@@ -16,6 +19,10 @@ jobs:
         with:
           name: pdf
           path: cw24.pdf
+      - name: Set Git user identity
+        run: |
+          git config --global user.email "actions@github.com"
+          git config --global user.name "GitHub Actions"
       - name: Get timestamp
         id: timestamp
         run: echo "::set-output name=timestamp::$(date +'%Y%m%d%H%M%S')"
@@ -24,6 +31,8 @@ jobs:
       - name: Push tag
         run: git push origin --tags
       - name: Release
+        if: startsWith(github.ref, 'refs/tags/')
         uses: softprops/action-gh-release@v2
         with:
           files: cw24.pdf
+          token: ${{ secrets.GITHUB_TOKEN }}