We installed the development OVA on Windows 10 VirtualBox 6.0.12, it runs, but breaks on upgrade to version 12. Updated python to version 3.5 and still will not update. Have not been able to troubleshoot further at this time. Get a connection error 111 to port 1300 and would sometimes have it die on cypress update.
I have posted a Debian 10 Buster + ERPNext v12 installation sequence (from scratch/bare metal to completion), and also saved/uploaded its .ova file which is, admittedly, large (~3GB).
Creating one on ubuntu is possible, but the difference in size will be nominal, since ubuntu is based on debian anyway. The above sequence uses a minimal non-GUI install.
Thanks for your help @tonto and @trentmu! However, I’ve installed ERPNext 12 on Ubuntu 16.04 along with Bench Manager. If anyone would like to use, it’s from scratch (Setup screen). I’ve uploaded it on Mediafire: