Merge remote-tracking branch 'remotes/famz/tags/docker-testing-pull-request' into staging
# gpg: Signature made Fri 29 Sep 2017 04:17:37 BST
# gpg: using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg: It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021 AD56 CA35 624C 6A91 71C6
* remotes/famz/tags/docker-testing-pull-request:
docker: Don't mount ccache db if NOUSER=1
docker: test-block: Don't continue if build fails
tests/docker/run: don't source /etc/profile
docker: Fix test-mingw
docker: add installation to build tests
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>