forgot to replace the sync with copy

.forgejo/workflows/container-build.yml

@@ -18,7 +18,7 @@ jobs:
         run: |
           skopeo login -u 'user' -p "${{ secrets.DOCKER_TOKEN }}" ${GITHUB_SERVER_URL}
           for tag in latest $GITHUB_TAG_NUMBER ; do
-              skopeo sync -a --dest-precompute-digests dir:image ${GITHUB_SERVER_URL//https:/docker:}/${{ env.GITHUB_REPOSITORY }}:$tag
+              skopeo copy -a --dest-precompute-digests dir:image ${GITHUB_SERVER_URL//https:/docker:}/${{ env.GITHUB_REPOSITORY }}:$tag
           done
       - name: Cleanup
         run: |