build-unit-test-docker: Build third-party packages early

Otherwise we have to rebuild them for each change we make to any of the
openbmc libraries we build. This is unnecessary since they don't depend
on our libraries. It also fixes any ordering issues when our libraries
depend on the third-party packages.

Change-Id: I7cd136013c65405f3add1190feb6903584f5a210
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed