Hey all,
I have opened a new branch called armbian, which has a variant under that name that lets you build OctoPi on Armbian. There is a a big list of devices that run armbian. And it would be interesting to hear if anyone there is a call for a popular device.

For now I am testing using a HummingBoard kindly provided by SolidRun, and it seems like OctoPrint, wifi system and webcams work smoothly.
The beta image of the HummingBoard is available here:
https://storage.googleapis.com/octoprint/Armbian_5.10_Cubox-i_Debian_jessie_3.14.67-0.14.0_beta.zip

md5:
https://storage.googleapis.com/octoprint/Armbian_5.10_Cubox-i_Debian_jessie_3.14.67-0.14.0_beta.zip.md5