The documentation was incorrect and didn't properly document the use of
tags;
- Image push currently only accepts an image-name, not an ID / digest.
- When giving a name, it's expected to be without tag included; when
including a tag, it is ignored.
- The tag parameter is required when pushing a single image (i.e., it
does not default to "latest"); omitting the tag parameter will push
all tags of the given image.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>