Issue rebasing from Aurora-DX -> Bazzite-DX

I'd like to rebase from Aurora-DX -> Bazzite-DX as per the title. However, when I run the command:

docker pull ghcr.io/ublue-os/bazzite-dx:sha256-13d7cb5cf2cf96722abce06c5ef4b54ff3c7f3420a1aa95a41b5848eaaf1f547.sig

docker pull ghcr.io/ublue-os/bazzite-dx:sha256-13d7cb5cf2cf96722abce06c5ef4b54ff3c7f3420a1aa95a41b5848eaaf1f547.sig

I get this error:

unsupported media type application/vnd.dev.cosign.simplesigning.v1+json

unsupported media type application/vnd.dev.cosign.simplesigning.v1+json

Do I need to already be on Bazzite or should I be able to rebase from Aurora-DX?