Rsync - Docker mod for openssh-server

This mod adds rsync to openssh-server, to be installed/updated during container start.

In openssh-server docker arguments, set an environment variable DOCKER_MODS=linuxserver/mods:openssh-server-rsync

If adding multiple mods, enter them in an array separated by |, such as DOCKER_MODS=linuxserver/mods:openssh-server-rsync|linuxserver/mods:openssh-server-mod2

Mod creation instructions

• Ask the team to create a new branch named <baseimagename>-<modname>. Baseimage should be the name of the image the mod will be applied to. The new branch will be based on the template branch.
• Fork the repo, checkout the newly created branch.
• Edit the Dockerfile for the mod. Dockerfile.complex is only an example and included for reference; it should be deleted when done.
• Inspect the root folder contents. Edit, add and remove as necessary.
• Edit this readme with pertinent info, delete these instructions.
• Finally edit the travis.yml. Customize the build branch, and the vars for BASEIMAGE and MODNAME.
• Submit PR against the branch created by the team.