cat babl-server_linux_amd64 | babl babl/update-babl-server -e IMAGE=registry.babl.sh/larskluge/string-upcase:v46
If the pushed babl-server version is 0.5.7 the result is a pushed image to the registry labeled:
registry.babl.sh/larskluge/string-upcase:v46.bs-0.5.7
check via
curl https://registry.babl.sh/v2/larskluge/string-upcase/tags/list