push latest if tag being pushed is latest

Author: ddavison

.travis.yml

@@ -20,7 +20,7 @@ after_success:
     docker login -e="$DOCKER_EMAIL" -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD";
     VERSION="$TRAVIS_TAG" make release;
     fi
-  - if [ "$TRAVIS_TAG" == "$LATEST" ]; then
+  - if [[ "$TRAVIS_TAG" == "$LATEST"* ]]; then
     docker login -e="$DOCKER_EMAIL" -u="$DOCKER_USERNAME" -p="$DOCKER_PASSWORD";
     VERSION="$TRAVIS_TAG" make tag_latest;
     VERSION="latest" make release;