This is a noop element which can be used to indicate to diskimage-builder that it should not bother creating a final image out of the generated filesystem. It is useful in cases where an element handles all of the image building itself, such as ironic-python-agent-ramdisk or Docker images. In those cases the final image normally generated by diskimage-builder is not the desired output, so there’s no reason to spend time creating it.

Elements that wish to behave this way should include this element in their element-deps file.