build-unit-test-docker: Make common flags for autotools

This change explicitly specifies the install prefix for all autotools
based builds. /usr/local should already be the implicit prefix so this
will not change anything functionally yet.

Change-Id: Ia47d20595b7f452a68cb4fab8ed2cdc300b7022e
Signed-off-by: William A. Kennington III <wak@google.com>
1 file changed