For those who prefer LXDE, here are the steps to transform the Jessie server to LXDE desktop:
## Update distro
sudo apt-get update
sudo apt-get dist-upgrade -y
## Install LXDE Desktop
sudo apt-get install -y xorg lxde lightdm policykit-1
sudo sed -i.bak -e 's/^NotShowIn=GNOME;KDE;$/NotShowIn=LXDE;GNOME;KDE;/' /etc/xdg/autostart/lxpolkit.desktop
## Add Armbian wallpaper
umask 022
sudo mkdir -p /usr/local/wallpapers
(cd /usr/local/wallpapers; sudo wget https://raw.githubusercontent.com/igorpecovnik/lib/master/bin/armbian01.jpg)
sudo sed -i.bak -e 's/^wallpaper=.*$/wallpaper=\/usr\/local\/wallpapers\/armbian01.jpg/' /etc/xdg/pcmanfm/LXDE/pcmanfm.conf
sudo sed -i.bak -e 's/^background=.*$/background=\/usr\/local\/wallpapers\/armbian01.jpg/' /etc/lightdm/lightdm-gtk-greeter.conf
In addition, I usually add
## Lock down SSH (no root login && ssh key-only login)
sudo sed -i.bak -e 's/PermitRootLogin yes/PermitRootLogin no/' -e 's/#PasswordAuthentication yes/PasswordAuthentication no/' /etc/ssh/sshd_config
sudo systemctl restart sshd
## Install Git
sudo apt-get install -y git
## Install Armbian monitor
sudo armbianmonitor -r
BTW, I am fully expecting people to point out that directly sed'ing pkg files is wrong and I really should be doing it another way. :-)