As long as we're doing it, we ought to do it for all the "official" Docker properties at least
Docker-DCO-1.1-Signed-off-by: Andrew Page <admwiggin@gmail.com> (github: tianon)
Docker-DCO-1.1-Signed-off-by: Tianon Gravi <admwiggin@gmail.com> (github: crosbymichael)
Upstream-commit: 07b50a90a8e7380b781d75dda3773eb23cafb131
Component: engine