diff --git a/Dockerfile b/Dockerfile
index a6d092b..42ffc38 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,6 @@ LABEL authors="Johannes Bülow <johannes.buelow@jmbit.de>"
 RUN mkdir /home/abc && chown -R abc:abc /home/abc && usermod -d /home/abc abc
 ENV HOME=/home/abc \
     START_DOCKER=false
-RUN apt-get purge chromium && apt-get install firefox-esr -y 
+RUN apt-get purge chromium -y && apt-get install firefox-esr -y 
 
 EXPOSE 3000 3001