Docker container for easy setup

[exyi]

Have you considered creating a Dockerfile that would install recodex in clear and predictable environment? It would make the setup much easier for everyone and could save you from problems with different distributions.

I tried to install it on CentOS 7 in docker using the Ansible script, but it has failed because some packages could not be installed and when I have installed them manually, it failed on the installation of recodex RPM package. I hope that the Docker image could help everyone with the setup.

[SemaiCZE]

Please see #1 ... I'd like to support something like Docker, lxc-container or Vagrant, but I really don't have the time to set it up now. The Ansible script is outdated, RPM packages generated from cmake are not ideal. However, my RPM packages from COPR are used in production, so you can try to modify the Ansible installer to use them. Your contribution would be welcome.