one image to deploy mostly without additional tooling on any systemd-based OS (which mounts the image and integrates the units from it), on a VM (just use it),

one image to deploy mostly without additional tooling on any systemd-based OS (which mounts the image and integrates the units from it), on a VM (just use it), or on bare metal (probably needs to be built on a full image but still can just use it assuming that is the case).