CentOS + Supervisord Docker image
This image is meant to be a base for other images. It is a rebuild of the model here, replacing Ubuntu with CentOS.
To use it, just add an app-specific config file (with a .conf extension) to
/etc/supervisor/conf.d/*.conf. The image auto-loads everything from this folder, so no CMD or ENTRYPOINT changes are required.
FYI: The failed builds are due to me stupidly trying to make changes from memory. The build is stable now that I've realized that is a bad idea.