rsyncdl is intended for simple one-way sync to a docker container running in unraid 6
from a remote machine running sshd & the rsync daemon.

Configuration:

4 environment variables must be configured:

REMOTEHOST=host.name.com
REMOTEUSER=myuser
REMOTEPASS=mypass
TRANSFERPATHS=/remote/path1:/local/path1,/remote/path2:/local/path1

The local paths must also exist, otherwise the job will not run. The implication here is
that these are volume mappings you created outside the container.

Note several important limitations of this image:

1. ssh password is defined by an environment variable, and then written to a script
   such that it can be referenced in a cron job. If you don't like this, please propose an
   alternative that scales.

2. rsync is configured to delete the source files on completion of successful transfers

3. logs can be retrieved with docker cp container:/var/log/syslog .

4. this has only been tested on unRaid 6b10