Continuing the discussion from How do we increase adoption? (originally: Should we use Docker for Discourse?):
@tanner and I just set up a new dev instance of Discourse using Docker, and it works beautifully. Most importantly, there is much less overhead, especially when it comes to upgrades, which were often complex under the previous manual installation.
We plan to move the production instance to Docker today (April 26). There should ideally be minimal downtime, and there will be no user-facing changes.