This removes outputs from yaml, instead you can do
```
moby build -output tar -output qcow2 file.yaml
```
or alternative syntax
```
moby build -output tar,qcow2 file.yaml
```
In future we may change this to be available in a `moby package`
step, but lets try this for now.
Signed-off-by: Justin Cormack <justin.cormack@docker.com>
Using the label `org.mobyproject.config` will use that JSON
(or yaml, but it is very hard to get yaml into a label as newlines are
not respected) for parameters that are not explicitly set in the yaml file.
Had to change parameter definitions so override behaves as expected.
fix#16
Signed-off-by: Justin Cormack <justin.cormack@docker.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>
