Observations while setting up another instance

[ConnorNelson]

• Changing the port on the host end via run.sh doesn't work due to port-ignored redirects.
• Currently students.yml is required, lets make that optional
• Currently global only challenges still require an instance, should handle division by zero
• If there's no global challenge files, global directories should be optional
• Are we setting up the loopback devices?
  • At a minimum lets start the instance with for i in {8..1024}; do if [ -e /dev/loop$i ]; then continue; fi; mknod /dev/loop$i b 7 $i; chown --reference=/dev/loop0 /dev/loop$i; chmod --reference=/dev/loop0 /dev/loop$i; done