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The tl;dr for installing AKSSignage on Raspbian Lite is:
$ bash <(curl -sL http://aksdev.nl/akssignage/install-aks.sh)
This installation will take 15 minutes to several hours, depending on variables such as:
- The Raspberry Pi hardware version
- The SD card
- The internet connection
During ideal conditions (Raspberry Pi 3 Model B+, class 10 SD card and fast internet connection), the installation normally takes 15-30 minutes. On a Raspberry Pi Zero or Raspberry Pi Model B with a class 4 SD card, the installation will take hours. As such, it is usually a lot faster to use the provided disk images.