Setup deploy pipeline and DigitalOcean infrastructure

[keithamoss]

Use the Docker container approach we took with Ealgis. Only rebuild and redeploying when there's a new version minted.

• Handle the warnings from Redis and RabbitMQ
• Decide on our approach to deploying new versions: In place on the existing server or a complete rebuild.
• Decide where Scremsong will live - alongside DemSausage or on a separate server?
• Setup the task queue containers - alongside the database server or separate
• Setup Database backups
• Setup log exfiltration for all of the above (if taking the nuke and rebuild approach)
• What's Django best practice for populating initial database state?