So i've finished download .ova image from
https://mynodebtc.com/ and just tried it a bit.
1. By default it asks 4 processor, 4 GB RAM & 27 MB video memory
2. If you use VirtualBox, you need to install VM VirtualBox Extension Pack
3. Guest Additions isn't installed by default, so you must install it by yourself (i haven't tried it yet).
4. myNode uses Debian 10 64-bit with OpenBox desktop environment
5. The default credentials is
Username: admin
Password: bolt
6. I don't need to configure anything, but if you need to configure anything (e.g. import Blockchain from your synced node or use Tor), you can't do it from their Web UI and must do it manually.
7. I saw Docker and Fail2Ban installed, even though there aren't images on Docker
For now it looks promising, i'll try it later when i'm not too lazy to configure it.