feat: reemplazar el commit y push de cambios por la creación de un Pull Request para actualizar la tabla de comparación de tamaños de imágenes Docker

Author: pabpereza

.github/workflows/build-and-compare.yml

@@ -239,15 +239,20 @@ jobs:
           
           echo "README updated!"
 
-      - name: Commit and push changes
+      - name: Create Pull Request with changes
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
-        run: |
-          git config --local user.email "github-actions[bot]@users.noreply.github.com"
-          git config --local user.name "github-actions[bot]"
-          git add README.md
-          if git diff --staged --quiet; then
-            echo "No changes to commit"
-          else
-            git commit -m "📊 Update Docker image size comparison table"
-            git push
-          fi
+        uses: peter-evans/create-pull-request@v6
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: "📊 Update Docker image size comparison table"
+          title: "📊 Update Docker image size comparison table"
+          body: |
+            This PR updates the Docker image size comparison table in the README.
+            
+            The table shows the size difference between optimized Dockerfiles and their `.old` counterparts.
+            
+            ---
+            _This PR was automatically generated by GitHub Actions._
+          branch: update-docker-sizes
+          delete-branch: true
+          base: main