build/docker: Reuse tagged image for OPNFV build
During CI build loops, the workspace is freshly fetched,
so '.docker' make target is built each time.
Reuse existing 'opnfv.org/ubuntu-builder:14.04' tag if present, but
enforce a configurable lifespan for this tag (currently 1 day), so
it does not get stale.
JIRA: FUEL-204
Change-Id: I8d1bd81f3e5e81068e9586c9bea9f43b3327eb38
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit
638d832527012531b506ec0ba40b297c41bfda0e)
Code Review / fuel.git / commit