For readonly filesystems specified via relative path, we were forgetting to
mount relative to the container's bundle directory.
PiperOrigin-RevId: 210483388
Change-Id: I84809fce4b1f2056d0e225547cb611add5f74177
Now each container gets its own dedicated gofer that is chroot'd to the
rootfs path. This is done to add an extra layer of security in case the
gofer gets compromised.
PiperOrigin-RevId: 210396476
Change-Id: Iba21360a59dfe90875d61000db103f8609157ca0