diff --git a/Dockerfile b/Dockerfile
index 3513fac..13be3b7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,6 @@
 FROM ubuntu:oracular
-
+ENV url=https://google.de
+ENV xrandr_conf="--mode 1920x1080 --rate 60"
 # Decrease number of pacakges 
 RUN apt-get update && \
     DEBIAN_FRONTEND='noninteractive'  apt-get install -y --no-install-recommends xserver-xorg-video-all \
@@ -49,11 +50,13 @@ RUN printf "\
 #xrandr \n\
 #xrandr --addmode VGA-0 1200x900_60.00\n\
 #xrandr --output default --gamma 0:0:0 --mode 1200x1000\n\
-#OUTPUT=\`xrandr -display :0 -q | sed '/ connected/!d;s/ .*//;q'\`\n\
+#rm -rf /tmp/* \n\
+OUTPUT=\`xrandr -display :0 -q | sed '/ connected/!d;s/ .*//;q'\`\n\
 #xrandr -display :0 --output \$OUTPUT --set \"Broadcast RGB\" \"Full\"\n\
 #xsetroot #000000\n\
 #GEO="$(fbset -s | awk '$1 == "geometry" { print $2":"$3 }')" \n\
 #fbset -s \n\
+xrandr --output \$OUTPUT \$xrandr_conf \n\
 export WIDTH=\$(xrandr --current | grep ' connected ' | cut -d ' ' -f 3 | cut -d '+' -f 1 | cut -d'x' -f1) \n\
 export HEIGHT=\$(xrandr --current | grep ' connected ' | cut -d ' ' -f 3 | cut -d '+' -f 1 | cut -d'x' -f2) \n\
 #vsize=`xdpyinfo | sed -n '/dimensions/s/[^0-9]*\([0-9]*\)x\([0-9]*\).*/\1/p'` \n\
@@ -65,10 +68,10 @@ xset s off \n\
 xset s noblank \n\
 #echo "Resolution: \$WIDTH,\$HEIGHT" \n\
 unclutter & \n\
-google-chrome --no-sandbox --window-position=0,0 --window-size=\$WIDTH,\$HEIGHT --start-maximized --no-default-browser-check --start-fullscreen --kiosk --noerrdialogs   --no-first-run --disable-infobars --incognito --overscroll-history-navigation=0   --disable-pinch --disable-translate --fast --fast-start --disable-features=TranslateUI  --password-store=basic  --app="\$url"\n\
+google-chrome --no-sandbox --window-position=0,0 --window-size=\$WIDTH,\$HEIGHT --start-maximized --no-default-browser-check --start-fullscreen --kiosk --noerrdialogs   --no-first-run --disable-infobars --incognito --overscroll-history-navigation=0   --disable-pinch --disable-translate --fast --fast-start --disable-features=TranslateUI  --password-store=basic --app="\$url"\n\
 " > /usr/local/bin/chrome-kiosk-wrapper
 
 RUN chmod +x /usr/local/bin/chrome-kiosk-wrapper
 
-CMD /usr/bin/xinit /usr/local/bin/chrome-kiosk-wrapper -- :0 -nolisten tcp vt1
+CMD rm -rf /tmp/.X0-lock && /usr/bin/xinit /usr/local/bin/chrome-kiosk-wrapper -- :0 -nolisten tcp vt1
 #cmd sleep infinity