Here are the images we can share with the public and that you can flash on a Nextcloud Box.
Pi2
Pi3
Images have been delayed until January
4 Likes
Should we add them to https://nextcloud.com/install/#instructions-server and/or https://nextcloud.com/box/ 
@jospoortvliet
If it helps, this is what I’ve provided with my backup image:
Details on how to restore the dd *.bin file:
NOTE
This image backup will format the attached PiDrive to a fresh install of Nextcloud. To maintain the version previously installed prior to the sdcard failing, follow the instructions on the below link, changing the target drive back to /dev/sda2
Username and password are the default:
u: ubuntu
p: ubuntu
Change this as soon as is convenient:
$ sudo adduser yournewusername
$ sudo adduser yournewusername sudo
(the second line gives the user account sudo privileges)
Log out and in with the new user
$ sudo passwd -l ubuntu
This will disable the default ubuntu user and all further logins would need to be done with the newly created user.
2 Likes
yeah would be good to provide links and info on the wiki, nextcloud.com/box isn’t very technical so I don’t think it fits there.
Can i also suggest instructions on using Etcher.io app to write the img image to SD card as well… a bit more user friendly esp for novices/less linuxy folks
-J
If you’re familiar with it, feel free to put something together and it may end up there 
It definitely will be added to the FAQ. I just haven’t found the time to write a decent guide.
I’ve posted a guide for Windows:
Feel free to add instructions for Linux and OSX.
For OSX you can use the app “Pi Filler 1.3” [for OS X 10.5 Leopard through 10.10 Yosemite]
download it at this website.
http://ivanx.com/raspberrypi/
Works very easy.
Open the app, select the image file.
Insert SD and wait till it says its ready.