store twlight_base image in dockerhub for improved caching.
if [ "${TRAVIS_PULL_REQUEST}" = "false" ] && [ -z "${TRAVIS_TAG}" ] && [ "${TRAVIS_BRANCH}" != "master" ]
then
echo "$DOCKER_PASSWORD" | docker login -u "$DOCKER_USERNAME" --password-stdin
-# docker push wikipedialibrary/twlight_base:${TRAVIS_BRANCH}
+ docker push wikipedialibrary/twlight_base:${TRAVIS_BRANCH}
docker push wikipedialibrary/twlight_build:${TRAVIS_BRANCH}
docker push wikipedialibrary/twlight:${TRAVIS_BRANCH}
fi
