mx-puppet-discord + matrix-docker-ansible-deploy

alright sorry for being so unprofessional, this is hastily wrote up so i dont forget what i did x3
someone please put this on the wiki!

ok so the main things you need to do is
1: you need to mount the registration file in the synapse container!
to do this, i made a directory called `/matrix/outside` where i put `discord-registration.yaml`

Here's what i put in  `vars.yml` for that config:
```
matrix_synapse_container_additional_volumes: [{"src": "/matrix/outside", "dst": "/inside", "options": "ro"}]
matrix_synapse_app_service_config_files: ["/inside/discord-registration.yaml"]
```

You'll need to run setup-all after this to put this in your synapse config!

2: You need to specify an external IP! The container cant use `localhost`
There's two files you need to change for this:
in `discord-registration.yaml` (which should be in /matrix/outside, copy it there if it isnt!)

you want to change the `url` line to
`url: 'http://{YOUR SERVERS EXTERNAL IP}:{THE PORT YOU PICKED}`

in `mx-puppet-discord/config.yaml`, you want to change `bindAddress:` to your external IP!

if that doesnt work, please message me @jo:catgirl.party or ask for help in #mx-puppet-bridge:sorunome.de

(oh i would like to add this officially, i just need mx-puppet-discord in a docker container)