This is a simple way to use a Raspberry Pi as a digital signage system. No need for a graphical user interface, no need to install a desktop. Just download the Raspberry Pi OS Lite image, burn it on an SD card and boot your Raspberry Pi to the operating system. This has been tested on a Raspberry Pi 4 Model B with 4GB of RAM, but it will probably run just fine on older models also.

Check out the Credits. Without these people, this project would not be possible.

curl -fsSL https://raw.githubusercontent.com/aristosv/digitalsignage/main/prepare/install -o /home/pi/install
bash /home/pi/install

cd /home/pi/digitalsignage/
git pull origin main

http://raspberrypi_ip:1337