diff --git a/Dockerfile b/Dockerfile
index 2155c03342bb545404fb91a800f2cce98943ca49..53ccb6665a012ed4fde631d7f5dcee0b37c4dde5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -13,7 +13,7 @@ USER root
 RUN apt-get update && \
    apt-get install -y --no-install-recommends \
    apt-utils \
-   apt-get install firefox
+   firefox
 #   cd /home/work/hslu-deep-learning/notebooks/Block_5/Seleniumtest
 #   wget https://github.com/mozilla/geckodriver/releases/download/v0.24.0/geckodriver-v0.24.0-linux64.tar.gz
 #   tar -xvzf geckodriver*