Have a Premade Docker Compose File of full Setup

This issue has been migrated from [#11317](https://github.com/matrix-org/synapse/issues/11317).

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**Description:**

Can you have an example docker compose file of everything setup. This includes reverse proxy, letsencrypt, redis, synapse, coturn and jitsi . It would make deploying an instance a lot easier. The details of a docker compose file answer a lot of questions of how things are setup and how they work.