fi
# Remove existing images if exist
-if [[ ! -z $(docker images | grep opnfv/functest) ]]; then
+if [[ $CLEAN_DOCKER_IMAGES ]] && [[ ! -z $(docker images | grep opnfv/functest) ]]; then
echo "Docker images to remove:"
docker images | head -1 && docker images | grep opnfv/functest >${redirect}
image_tags=($(docker images | grep opnfv/functest | awk '{print $2}'))