cros-test dockerfile

Bring the CTS apt-get into the main apt-get. Locally, they seem to crash
when I build without the apt-get update, so might as well just make it
one step.

BUG=None
TEST=local build && cq

Change-Id: Ia783c0540c83c71829a987594d8ef7b438c72dd6
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/dev-util/+/3867537
Tested-by: Derek Beckett <dbeckett@chromium.org>
Commit-Queue: Azizur Rahman <azrahman@google.com>
Reviewed-by: Azizur Rahman <azrahman@google.com>
Auto-Submit: Derek Beckett <dbeckett@chromium.org>
1 file changed