Description of problem: In URPMI, it's possible to have README.urpmi %doc files that get shown post-transaction to inform the user of additional required steps. It'd be great if a similar system existed in DNF (either in the core or as a plugin) so that a continuity of functionality is possible. The current functionality in URPMI is as follows: README.urpmi: always displayed README.install.urpmi: displayed when first installing README.(update|upgrade).urpmi (or README.upgrade.urpmi): always displayed when updating the package README.<EVR>.(update|upgrade).urpmi: displayed when updating the package from a version strictly older than the given EVR Note: <EVR> can be epoch:version-release, epoch:version, version-release, or version. Shortest wins. I would propose that we add support for a README.RPM filename that operates on the same behavior. I feel like this is possible as a plugin, but I'm not sure if our plugin hooks are granular enough... Additional info: This behavior is documented here: https://wiki.mageia.org/en/Packagers_RPM_tutorial#Interaction_with_urpmi_and_rpmdrake