build-setup.sh: add extra docker run args

As was done in run-unit-test-docker.sh via 9c237f85, add an env
variable that users can set to pass in additional docker run parameters.

This is useful for mounting in a separate filesystem that has a local
reference repo for use during a clone (to improve clone performance).

Change-Id: Ia75a96e017588f85c33ad2eadf914a4e2098cb65
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
1 file changed