diff --git a/Dockerfile b/Dockerfile
index bc6a3b8..a4316a3 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,8 @@
-# Firefox over VNC
-#
-# VERSION               0.3
-
 FROM ubuntu
 
-# Install vnc, xvfb in order to create a 'fake' display and firefox
 RUN apt-get update \
-    && apt-get install -y wget x11vnc xvfb firefox \
-    && mkdir ~/.vnc \
+    && apt-get install -y wget x11vnc xvfb firefox
+RUN mkdir ~/.vnc \
     && x11vnc -storepasswd xiaosong ~/.vnc/passwd \
     && bash -c 'echo "firefox" >> /.bashrc' \
     && wget http://fpdownload.macromedia.com/get/flashplayer/pdc/11.2.202.635/install_flash_player_11_linux.x86_64.tar.gz \