Xibo support on CentOS 7.x (ex.: via Docker)

Here is current doc to install Xibo:
http://xibo.org.uk/manual-tempel/en/install_environment.html

So the reference process is on Ubuntu. Let's see how to document for CentOS 7.x (and thus make it easier later for the ClearOS app)

• Concerns: PHP 5.5 (CentOS 7.x ships with PHP 5.4)
• http://zeromq.org/ which is a PPA (Ubuntu)

Dan Garner and Marc Laporte agreed on 2016-07-13 to proceed with Docker: https://github.com/xibosignage/xibo-docker
https://hub.docker.com/r/xibosignage/

Related: Docker