There exist rancher (http://rancher.com/rancher-os/) which can solve this problem as follows
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Its a 30-40mb operating system as bootable ISO so no questions of crash with power outages, can always reboot from ISO.
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One can load docker images which shall be of Ubuntu / Windows thereby eliminating footprint needs in terms of thin OS and no requirement of VMWare / Virtual Box.
Still need to find out how to convert a virtual image to docker image like vmdk’s etc.
solved Thinnest operating system supporting virtualization apps like VirtualBox? [closed]