Synapse

To init the synapse server, replace the SYNAPSE_SERVER_NAME value in the docker compose file to your domain name and rundocker compose up synapse to generate the configuration files. Then remove the command: generate and all the environment variables from the synapse service in the compose file.

Use pwgen -s 64 1 to generate a password and set it to the POSTGRES_PASSWORD environment variable on the postgres container.

Then set go into the caddy directory and replace all domain names in the Caddyfile with your domain names.

Go into the cotorun directory and edit the turnserver.conf file. Replace the "realm" with your domain name. Replace the "cert" and "pkey" paths with your domain name for the turn server (caddy will generate the certs for you). Run pwgen -s 64 1 again to get a new password and set it to the "static-auth-secret" field.

Now go into your synapse folder and edit the "homeserver.yaml" file. Remove the current database entry from the file and copy everything from the "homeserver.template" file into it. Set the database password to the one set in the "docker-compose.yml". Change the turn server uris to your turn domain name. Set the "turn_shared_secret" to the value of the "static-auth-secret" in the "turnserver.conf" file.

Now run docker compose up -d to start everything. To create your use, run docker exec -it synapse register_new_matrix_user http://localhost:8008 -c /data/homeserver.yaml and fill in all the values.