docker: report hint when docker.py check fails
authorAlex Bennée <alex.bennee@linaro.org>
Thu, 12 Jul 2018 13:36:18 +0000 (14:36 +0100)
committerAlex Bennée <alex.bennee@linaro.org>
Tue, 24 Jul 2018 10:45:25 +0000 (11:45 +0100)
commitd19f5fc0411b101798fdfc80b9680df85b316636
treed7bf483d961f9b424d04d0cddad16c86fb7a3e20
parent27963460694cdaf5ad757d77e5ec35446b4e8f2d
docker: report hint when docker.py check fails

When a check fails we currently just report why we failed. This is not
totally helpful to people who want to boot-strap a new image. Report a
hint as to why it failed.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Suggested-by: Fam Zheng <famz@redhat.com>
tests/docker/Makefile.include