Aaron Lehmann 66aada1792 Fix pulling images that contain no layers at all ...

The download manager assumed there was at least one layer involved in
all images. This can be false if the image is essentially a copy of
`scratch`.

Fix a nil pointer dereference that happened in this case. Add
integration tests that involve schema1 and schema2 manifests.

Fixes #21213

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
Upstream-commit: 7cf894ce1013e5843d5c151f24520b51d34515d0
Component: engine

2016-03-15 11:10:03 -07:00

components/engine

Fix pulling images that contain no layers at all

2016-03-15 11:10:03 -07:00

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