1. A method, comprising: receiving, by a loading computing device, a request to restore a testing computing device to a known software configuration comprising a plurality of software components for the testing computing device; and after receiving the request to restore the testing computing device to the known software configuration, restoring the testing computing device to the known software configuration by at least: obtaining, by the loading computing device, a software image from computer-readable storage, the software image storing at least part of the known software configuration, wherein the software image comprises security-context data having one or more security contexts associated with the plurality of software components, and wherein a particular security context of the one or more security contexts comprises an identity, a role, and a domain, storing, by the loading computing device, at least the plurality of software components of the obtained software image onto the testing computing device, and after storing the plurality of software components onto the testing computing device, setting one or more security contexts for the plurality of software components stored on the testing computing device using the security-context data stored with the software image.