tests/docker: use direct RUNC call to build containers

We don't really need stuff from docker.py to do the build as we have
everything we need with a direct call. We do rely on the dockerfiles
being able to tweak the UID/name mapping as the last step.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230228190653.1602033-21-alex.bennee@linaro.org>
1 file changed