Allow usage of the experimental docker resolver as a package. There are
very few changes to the consuming code, demonstrating the effectiveness
of the abstraction. This move will allow future contributions to a more
featured resolver implementation.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
As a demonstration of the power of the visitor implementation, we now
report the image size in the `dist images` command. This is the size of
the packed resources as would be pushed into a remote. A similar method
could be added to calculate the unpacked size.
Signed-off-by: Stephen J Day <stephen.day@docker.com>
