Hosting other Ruby on Rails App Side by Side with Discourse

You can install ruby “outside” of the container and host another application, or another service on a different port and use nginx to direct requests between the two applications. You are correct that in theory this could be another discourse install… but you may want to look into the multisite configs.

https://meta.discourse.org/t/using-nginx-alongside-the-docker-install/15282/4

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