grub: update build

.github/workflows/grub.yml

@@ -40,6 +40,7 @@ jobs:
         if: success() && inputs.push == true
         run: |
           if [ -f "grub.img.gz" ]; then
+            cp -f "grub.img.gz" "files/initrd/opt/arc/grub.img.gz"
             echo "Git push ..."
             git pull
             status=$(git status -s | grep -E 'grub.img.gz' | awk '{printf " %s", $2}')