Hi 
You got a black screen because with Virtualbox, default selected system is a Linux 32-bit
You should select Debian 64bit:
Regarding your first issue:
10.2.0.15 is the default virtualbox NAT network, you won’t be able to reach this IP from your computer.
If you want to use NAT, you have to define port forwarding:
As an example, here are my settings:
- 8080 to access to VM port 80
- 4443 to access to port 443
- 22222 to access to ssh port 22:
I usually use bridged adapter to “plug” my VM network to my Wifi or Eth card:
Thus, I can use my home network to access to my passbolt VM. If you choose bridged adapter, you should fix the IP address:
- Assign a static IP in your DHCP server to your VM
- Manually configure a static IP address from your VM: https://www.cyberciti.biz/faq/add-configure-set-up-static-ip-address-on-debianlinux/
Hope this help 