/usr/share/doc/rssh/examples/mkchroot.sh /var/chroot
It created most of the files, but didn't include the right libraries. Here's the minimum file listing I've been able to use:
libnsl was the tricky one that I found by trial and error. I installed bash inside the chroot and tested running each binary. Everything runs without libnsl, but its required if you want it to work with rssh.
