Due to a missing else the tool would previously terminate with an error
message showing that the kernel or init image didn't exist, even if it
was pulled successfully. Invoking the tool again would continue to the
next image.
Signed-off-by: Magnus Skjegstad <magnus@skjegstad.com>
Add a canonical single tarball output format. This
adds kernel and cmdline to `/boot` where LinuxKit output
formats will find them.
Make the other output formats use that as a base.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
`docker create` will not pull an image so we need an additional fallback.
Rework the pull and trust code so it is in one place to facilitate this.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
Also do not require `tar` to be in container, use the standard
image export code that we already have and find the files we
want.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
