A systemd utility for managing and deploying portable service images on Linux systems. More information: https://www.freedesktop.org/software/systemd/man/portablectl.html.
portablectl list
portablectl attach {{path/to/image}}
portablectl detach {{path/to/image|image_name}}
portablectl inspect {{path/to/image}}
portablectl is-attached {{path/to/image|image_name}}