[Synapse](https://github.com/matrix-org/synapse) homeserver for the [matrix](http://matrix.org/) network.

# Volumes
- `/var/lib/matrix-synapse/media_store/`
- `/var/lib/matrix-synapse/signing/`
- `/var/lib/matrix-synapse/registrations/`

# Environment Variables
## SERVER_NAME
Name of the synapse server.

## PUBLIC_BASE_URL
Full base url.

## SHARED_SECRET
If set, allows registration by anyone who also has the shared secret, even if registration is otherwise disabled.

## MACAROON_SECRET_KEY
Secret key for macaroon.

## FORM_SECRET_KEY
Secret key to calculate HMACs for form values.

## TURN_URIS
Comma seperated list of TURN servers to use.

## TURN_SHARED_SECRET
The shared secret used to compute passwords for the TURN server

## TURN_USER_LIFETIME
- default: 1h

How long generated TURN credentials last.

## ADMIN_EMAIL
Email at which the administrator can be reached.

## DB_HOST
Database host.

## DB_NAME
Database name.

## DB_USER
Database user.

## DB_PASSWORD
Password for the database user.

## MAX_UPLOAD_SIZE
- default: 10M

The largest allowed upload size.

## MAX_THUMBNAIL_PIXELS
- default: 32M

Maximum number of pixels that will be thumbnailed.

## DYNAMIC_THUMBNAILS
- default: True

Whether to generate new thumbnails on the fly to precisely match the resolution requested by the client.

## REGISTRATIONS
- default: []

Semi colon seperated list of registration files to load.

## OIDC_ENABLED
- default: false

Whether to enable authorization against an OpenID Connect server.

## OIDC_DISCOVER
- default: true

Whether to use the OIDC discovery mechanism to discover endpoints.

## OIDC_ISSUER
The OIDC issuer. Used to validate tokens and (if discovery is enabled) to discover the provider's endpoints.

## OIDC_CLIENT_ID
oauth2 client id.

## OIDC_CLIENT_SECRET
oauth2 client secret.

## OIDC_SCOPES
- default: "\"openid\""

Comma separated list of scopes to request.

## OIDC_AUTH_ENDPOINT
oauth2 authorization endpoint. Required if provider discovery is disabled.

## OIDC_TOKEN_ENDPOINT
oauth2 token endpoint. Required if provider discovery is disabled.

## OIDC_USERINFO_ENDPOINT
OIDC userinfo endpoint. Required if discovery is disabled and the "openid" scope 
is not requested.

## OIDC_JWKS_URI
URI where to fetch the JWKS. Required if discovery is disabled and the "openid" 
scope is used.

## OIDC_MAPPING_PROVIDER
- default: synapse.handlers.oidc_handler.JinjaOidcMappingProvider

Python module for mapping attributes returned from a OIDC provider onto a matrix 
user.

## OIDC_ALLOW_EXISTING_USER
- default: false

Whether to allow a user logging in via OIDC to match a pre-existing account 
instead of failing.

## OIDC_LOCALPART_TEMPLATE
- default: {{ user.preferred_username }}

Jinja2 template for the localpart of the MXID.

## OIDC_DISPLAY_NAME_TEMPLATE  
- default: {{ user.given_name }} {{ user.last_name }}

Jinja2 template for the display name to set on first login.

## SSO_CLIENT_WHITELIST
- default: []

A semi colon separated list of client URLs which are whitelisted so that the user does not have to 
confirm giving access to their account to the URL.

# Ports
- 8008