Work out how to have multiple instances of the deliberation-empirica service running simultaneously, re: terraform

[JamesPHoughton]

When we have multiple collaborators with their own experiments, we'll need to spool up multiple instances of the service and back them up in a way that means they don't overwrite each other

[hilyas]

I am not very familiar (yet) with how instances are spun up and managed, but it seems like a good use case for containers running on a cluster, where every experiment (version of the service i think) runs in a separate container, with their own backups.