Bind a volume for .ccache to the `docker-run-local` targets. By default the current user's $(HOME)/.ccache will be used, it can be overridden via the DOCKER_CCACHE variable. Also rearrange some docker parameters to keep the target readable. Change-Id: I7d0bdb3861ac56361cacfa74aaf8b45c4f135e5c Signed-off-by: Nico Huber <nico.h@gmx.de> Reviewed-on: https://review.coreboot.org/29457 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Patrick Georgi <pgeorgi@google.com>