Add script to create GUI image
diff --git a/install-gui.sh b/install-gui.sh
new file mode 100644
index 0000000..c37f23a
--- /dev/null
+++ b/install-gui.sh
@@ -0,0 +1,47 @@
+#!/bin/bash
+# install-gui.sh
+#
+# Runs as mininet user.
+#
+# This script sets up the desktop environment on top of a base image.
+
+# ------------- Set up desktop environment -------------
+
+echo "Setting up desktop environment"
+
+# Remove kernel boot options that will prevent the gui from running
+sudo sed -i s/text// /etc/default/grub
+sudo sed -i s/ipv6.disable=1// /etc/default/grub
+sudo update-grub
+
+sudo apt-get install -y xorg lxde systemd-shim
+
+#TODO: add backgrounds folder
+sudo mkdir -p /usr/share/backgrounds
+#TODO: change background
+# Remove wallpaper, change background color
+sudo sed -i 's/wallpaper_mode=1/wallpaper_mode=0/g' /usr/share/lxde/pcmanfm/LXDE.conf
+sudo sed -i 's/desktop_bg=#000000/desktop_bg=#104187/g' /usr/share/lxde/pcmanfm/LXDE.conf
+
+sudo sed -i 's/lang=1/lang=0/g' /etc/lxdm/default.conf
+sudo sed -i 's/bottom_pane=1/bottom_pane=0/g' /etc/lxdm/default.conf
+sudo sed -i 's/disable=0/disable=1/g' /etc/lxdm/default.conf
+
+# Allow VM to be rebooted from GUI
+echo "session required pam_systemd.so" | sudo tee --append /etc/pam.d/lxdm
+
+wget -O onos.png "https://gerrit.onosproject.org/gitweb?p=onos-vm.git;a=blob_plain;hb=refs/heads/onos-tutorial-1.1;f=onos.png"
+sudo cp onos.png /usr/share/backgrounds/default.png
+
+# Change LXTerminal default colors
+sudo sed -i 's/bgcolor=#000000000000/bgcolor=#ffffffffffff/g' /usr/share/lxterminal/lxterminal.conf
+sudo sed -i 's/fgcolor=#aaaaaaaaaaaa/fgcolor=#000000000000/g' /usr/share/lxterminal/lxterminal.conf
+
+# Disable screensaver
+sudo sed -i '/screensaver/d' /etc/xdg/lxsession/LXDE/autostart
+cat > /home/mininet/.xsessionrc << EOF
+# disable screensaver
+xset s off
+# disable dpms (standby)
+xset -dpms
+EOF
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