fix registry

.github/workflows/docker-build-test-upload.yml

@@ -131,7 +131,7 @@ jobs:
         if: inputs.parent-image != ''
         run: |
           mkdir -p /tmp/a2s/images/
-          docker save ${{ env.registry }}/${{ env.OWNER }}/${{ inputs.image }}:${{ inputs.variant }} | zstd > /tmp/a2s/images/${{ inputs.image }}--${{ inputs.variant }}.tar.zst
+          docker save ${{ inputs.registry }}/${{ env.OWNER }}/${{ inputs.image }}:${{ inputs.variant }} | zstd > /tmp/a2s/images/${{ inputs.image }}--${{ inputs.variant }}.tar.zst
         shell: bash
 
       - name: Upload image as artifact 💾