Screenly OSE Disk Image steps

Download the latest Rasbian Stretch Lite
Flash out the disk image to a 4GB SD card
Boot the system
Run sudo apt-get update && sudo apt-get -y upgrade
Run raspi-config and:
- Set the keyboard to locale to en_US.UTF-8 UTF-8
- Set the memory split to 192
Run the installer and install the production branch
Verify that everything works
Run apt-get clean
Run sudo wget -O /etc/init.d/resize2fs_once https://github.com/RPi-Distro/pi-gen/raw/dev/stage2/01-sys-tweaks/files/resize2fs_once
Run sudo chmod +x /etc/init.d/resize2fs_once
Run sudo systemctl enable resize2fs_once
Add init=/usr/lib/raspi-config/init_resize.sh in /boot/cmdline.txt
Shut down the system
Create the disk image