docker tar.gz

tar -cf - $DIR | pigz > $HOME/repo_archive_$(date +"%Y%m%d").tar.gz
pigz -dc repo_archive_$(date +"%Y%m%d").tar.gz | tar -x 

docker save <image>:<tag> | pigz > <image>.tar.gz
docker save <image>:<tag> | zstd > <image>.tar.zst

pigz -dc <image>.tar.gz | docker load
zstd -dc <image>.tar.zst | docker load