matrix-docker-ansible-deploy/roles/custom/matrix-element-call/templates/config.json.j2

{
  "default_server_config": {
    "m.homeserver": {
      "base_url": "{{ matrix_homeserver_url }}",
      "server_name": "{{ matrix_domain }}"
    }
  },
  "livekit": {
    "livekit_service_url": "{{ matrix_jwt_service_url }}"
  }
}