I would personally agree with the idea of tagging discourse_docker with the same version as the stable release. We currently use Puppet to automate the process of bootstrapping new Docker containers, which we pin to a specific stable release of Docker (we’re in the kind of corporate environment where the idea of running “beta” software is basically a no-go). It’d be nice if I could use that same version number as a tag in the discourse_docker repo and know that the version of the launcher I’m using is going to be able to build the version of Discourse I want to build.