This also updates the comments at the top of the file to note that `-v /var/lib/docker` should be supplied for running `test-integration-cli` and that `hack/dind` is actually also required for `test-unit`. Signed-off-by: Andrew "Tianon" Page <admwiggin@gmail.com> Upstream-commit: ece4b5bde8ff6ea21b51275a69787191d12a5d65 Component: engine