Thanks all for the feedbacks, I am 100% behind the idea that, the end user does not care about which fedora base image is used (as long as he trust that patch and security fixes are applied). If I want to use the nginx container for example as a user I am more interested in the version of nginx than the version of fedora.
I also feel that having to specify the version fedora during the pull is not a very nice user experience. (ie docker pull registry.fedoraproject.org/f27/nginx) Something more user friendly would be docker pull registry.fedoraproject.org/nginx:1.12.1 My feeling is that we are not making a great use of the container tags. Coming back to the Fedora Container Release, the current tooling automates the REbuilds of containers. So if an image was never built against the f28 branch the tooling will not be able to rebuild the image. Also currently when a new branch is created ( for example f28 ) maintainer still need to update their FROM line to point to the correct base image. I think we need to come up with exactly what we want to achieve with the container release and once we have a better idea changing or adapting the tooling will be the next logical step. Thanks Clément