The default registry is Docker Hub - using the domain
docker.io, and the default image tag is
kiamol/ch05-pi is the short form of
docker pull kiamol/ch05-pi docker pull docker.io/kiamol/ch05-pi:latest
Check the image list and you'll only see one - these aren't aliases, they're just different froms of the same name:
docker image ls kiamol/ch05-pi
Be wary of using
latestimages - it's a confusing name because it might not be the latest version.
For other registries you need to include the domain in the reference - so images on MCR need to be prefixed with
docker pull mcr.microsoft.com/dotnet/runtime:6.0
Back to the exercises.