Merge pull request picoCTF#480 from picoCTF/dependabot/pip/picoCTF-sh…

…ell/cryptography-3.2

Bump cryptography from 2.9.2 to 3.2 in /picoCTF-shell

Merge pull request picoCTF#479 from dmartin/shell-login-fixes

Shell login fixes

Merge pull request picoCTF#477 from m4dSt4cks/master

Updated CompiledBinary example to automatically disable PIE

Add undocumented attribute to skip service file creation

This is intended for advanced use, if a service-type problem needs
to avoid creating xinetd service files.

Merge pull request picoCTF#473 from dmartin/restore-synced-dir-permis…

…sions

Fix Ansible permissions issue with Windows synced directory

Fix documentation links

Ensure $SIP also effects docker_public_host

Previously, would only apply to shell_hostname, which causes issues during
installation of sample problems.

Remove reference to manual autocrlf config

Merge pull request picoCTF#459 from hiliang-cmu/master

Maintenance update

Merge pull request picoCTF#449 from hiliang-cmu/master

Truncate problem instance username to 28chars