Docker container for lsyncd.
The container will start lsyncd on startup, and begin trying to sync however is configured. The default configuration file is /config/lsyncd.lua, which will need mounting in.
Rsync uses ssh by default, and the easiest way to do this is using keys. The default key location should be /config/.ssh/id_rsa{,.pub}.
If you receive the message "Host key verification failed.", You'll need to copy the host key from another machine, and mount a file for /config/.ssh/known_hosts.