Jailing rails apps without chroot?

apps

#1

Since we don’t have chroot on the shared plans for some reason, I can’t seem to figure out a way to keep Rails apps from reaching the filesystem above their application folder so they can’t stomp on each other or my other files. Does anyone have any ideas? I don’t want to give each one a unique user and I can’t seem to figure out a way to do it any other way with permissions/ownership.