Ensured that Docker containerizer returns a failed Future in one case.
Because the Docker library did not immediately transition the
Future returned by `inspect()` to DISCARDED, it was safe for the
Docker containerizer to discard this Future before failing the
Promise associated with the Future re
Ensured that Docker containerizer returns a failed Future in one case.
Because the Docker library did not immediately transition the
Future returned by `inspect()` to DISCARDED, it was safe for the
Docker containerizer to discard this Future before failing the
Promise associated with the Future re
