only push new docker image on release

Author: andrewsykim

build/travis-deploy.sh

@@ -14,6 +14,13 @@ if [ "${TRAVIS_EVENT_TYPE}" = "pull_request" ]; then
     exit 0
 fi
 
+# Release image tag format: v0.0.0 and latest
+if [ -n "$TRAVIS_TAG" ]; then
+    echo "Running Release build on Travis"
+    make push-release RELEASE_TAG="$TRAVIS_TAG"
+    exit 0
+fi
+
 # Push image tag format: COMMIT
 echo "Running push build on Travis"
 make push