https://meta.discourse.org/t/add-an-offline-page-to-display-when-discourse-is-rebuilding-or-starting-up/45238/121?tl=en
Add an offline page to display when Discourse is rebuilding or starting up - #121 by amotl -...
Dec 11, 2019 - :warning: This guide is intended for advanced users, who are already using nginx outside the docker container. By following this guide you make your setup more...