Starting witha3fe7d62b8, `docker invalid-subcommand` did not exit with non-zero status. Fix #1428 Signed-off-by: Akihiro Suda <suda.akihiro@lab.ntt.co.jp> (cherry picked from commitd708cada43) Signed-off-by: Sebastiaan van Stijn <github@gone.nl> Upstream-commit:ebe071a9b3Component: cli