docker: docker.py use "version" to probe usage
authorAlex Bennée <alex.bennee@linaro.org>
Mon, 18 Jun 2018 10:14:40 +0000 (11:14 +0100)
committerAlex Bennée <alex.bennee@linaro.org>
Wed, 20 Jun 2018 21:13:39 +0000 (22:13 +0100)
commit83405c4517679722257b1560f75fb7488b671374
treead557d3c0b999a71a8c6a6c61743edfc1e29f28c
parent1a7fab926b3d9913149f3a859185cee7f27f767a
docker: docker.py use "version" to probe usage

The "images" command is a fairly heavyweight command to run as it
involves searching the whole docker file-system inventory. On a
machine with a lot of images this makes start-up fairly expensive.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
tests/docker/docker.py