I have found that at least file system related functionality has Windows (7,8) already in place. One can use VHD files (virtual disks) for handling "images" concept in Docker. These image are used for virtual machine but can be created/attached/used directly by Windows too:
diskpart
DISKPART> create vdisk file=c:\base-image.vhd maximum=200 type=expandable
New image can be layered on top of base image:
DISKPART> create vdisk file=c:\image-2.vhd parent=c:\base-image.vhd
See more information about managing virtual disks.
Unfortunately, process lightweight isolation/sandboxing is probably not possible (at least not simple), although some methods do exists (http://www.sandboxie.com/, Native Client in Google Chrome ...)