I use this tutorial to start working with docker on windows. Everything was fine, but when I build my Dockerfile, image created without a name. screen from PowerShell
How to name this image?
It's not a name or tag of the image.
You can add tag to image.
docker tag [imageid] [tag]
where [imageid] is the your image ID (85d1607990cd - from your screenshot) and [tag] - is the image tag ("name") for example iis. And as result the full command is:
docker tag 85d1607990cd iis
You can read more about the image tagging here