Update ci.yml

.github/workflows/ci.yml

@@ -26,13 +26,17 @@ jobs:
       - name: Replace placeholder with current date
         run: |
           DATE=`date +'%Y-%m-%d'`
-          sed -i 's|<span class="last-update-date">.*</span>|<span class="last-update-date">PLACEHOLDER</span>|' index.html
-          sed -i 's|PLACEHOLDER|'$DATE'|' index.html
+          sed -i 's|<span class="last-update-date">.*</span>|<span class="last-update-date">'$DATE'</span>|' index.html
           git config --global user.name 'GitHub Actions'
           git config --global user.email '[email protected]'
           git add index.html
-          git commit -m "Update index.html with current date"
-          git push
+          if git diff --cached --quiet
+          then
+            echo "No changes to commit"
+          else
+            git commit -m "Update index.html with current date"
+            git push
+          fi
 
       - name: Login to GitHub Container Registry
         uses: docker/[email protected]