
This guide applies to those on the official Ubuntu site, which offers various flavors. Install the cloud imageĬloud images are available from several sources. I also give some untested suggestions for its use in a Windows environment. I divided the process, which is designed for a Linux box, into steps:

The solution starts from a cloud image, as suggested in one of the posts on the subject ( How to do a minimal install of 20-04).

In addition, the process might be completely automated (see this or this), while the legacy one requires a manual installation taking a long time. In fact the new one is faster to execute and returns a VM that is probably better configured for the use in a VirtualBox environment. The solution may explain why the "mini.iso" based one is going to be dismissed. Below is a step-by-step guide that is based on such suggestions. Browsing the Internet I found various suggestions, but not a complete solution. I wanted a well-documented, long-term solution, possibly based on official releases. But this disk image is now legacy, although still unofficially available. This task was formerly carried out using the minimal install mini.iso. The result should consist of a VM running in a local VirtualBox installation (not in the cloud). My problem is the creation of a custom Ubuntu VirtualBox VM starting from a minimal one.
