If a user wants to bind to a privileged port (<1024) our current systemd unit fails to provide enough capabilities to endlessh binary.
So, a user can modify `/etc/endlessh/config` to have `Port=22` or similar and then check out the systemd unit to enable the extra attribute.
`ConfigurationDirectory=endlessh` should be enough. Previous assignment throws a warning with systemd 237
```
May 13 08:57:18 kernelwtf systemd[1]: Started Endlessh SSH Tarpit.
May 13 08:58:20 kernelwtf systemd[1]: /etc/systemd/system/endlessh.service:25: ConfigurationDirectory= path is not valid, ignoring assignment: /etc/endlessh
```
Thanks for creating this wonderful tool!
By default `make install` installs the binary into `/usr/local/bin` so I think this should be changed accordingly.
Cheers
Assuming an /opt/ install. For those unfamiliar, plop it into /etc/systemd/system (symlinks might not work, old systemd bug), run `systemctl daemon-reload`, and have it start on boot (and immediately) with `systemctl enable --now endlessh.service`
