I tried to create a Multiplatform docker image using this docker blog post https://www.docker.com/blog/multi-platform-docker-builds/
And it worked fine but as a result I got several images (eg. Multiplatform with tag:latest, and one for each platform - :amd64, :arm64 etc.)
But for example in ubuntu official registry (https://hub.docker.com/_/ubuntu) they have only one Multiplatform image with tag :latest and no other images.
How did they do it?