Configurable Cloud VM is a small command line tool for automatically creating development and demo environments for complex projects. The tool sets up these development environments inside a virtual machine which it automatically creates on the user’s host computer. This avoids polluting the user’s host machine with components from the chosen development environment and provides a clean, predictable and repeatable environment in which this development environment can run.
loginctl enable-linger $USER
This will ensure that the VM's do not get killed when all user sessions terminate.