diff --git a/Dockerfile-test-env b/Dockerfile-test-env
index 51172a9d..2ed533b9 100644
--- a/Dockerfile-test-env
+++ b/Dockerfile-test-env
@@ -8,6 +8,6 @@ ADD app /app
 RUN echo "\nTesting your python code for errors\n" && \
   pylint -E /app/*.py
 
-RUN echo "\n#########################\nRun dragon bot by typing \npython dragon-bot.py\n#########################\n"
+RUN printf "\n#########################\nRun dragon bot by typing \npython dragon-bot.py\n#########################\n\n"
 
 WORKDIR /app