Manage the different APIs of docker-py get_image in imagebuilder plugin.
Manage the different APIs of docker-py get_image in imagebuilder plugin.

Signed-off-by: Clement Verna <42821abe07dd2b40ac4015e34f880ddb708f32d6@tutanota.com>

projectatomic/atomic-reactor,fr34k8/atomic-reactor,DBuildService/atomic-reactor,fr34k8/atomic-reactor,projectatomic/atomic-reactor,DBuildService/atomic-reactor