[CI] volume debugging

Author: YWHyuk

.github/workflows/docker-image.yml

@@ -28,6 +28,19 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Free up disk space
+        run: |
+          echo "Before cleanup:"
+          sudo df -h
+          sudo docker system df
+          sudo du -sh /var/lib/docker || true
+          sudo docker system prune -af --volumes || true
+          sudo docker builder prune -af || true
+          echo "After cleanup:"
+          sudo df -h
+          sudo docker system df
+          sudo du -sh /var/lib/docker || true
+
       # Step 3: Build and Push Docker Image
       - name: Build and Push Docker Image
         uses: docker/build-push-action@v6