This directory is still here only for historical reference. The scripts here can be used to create a VM image based on Ubuntu 16.04 Linux, but free support and updates for that version of Ubuntu Linux ended in April 2021. The VM created by these scripts also rely upon and install Python2 versions of several Python libraries, which the latest version of the tutorials repository no longer uses.
See the vm-ubuntu-20.04 directory for similar scripts that can be
used to create a VM image based on Ubuntu 20.04 Linux, and uses only
Python3.