plugin XEP-0373: minor renaming + set `gpg_provider` in client: - `sat` and `self.__sat` have been renamed to `host` and `self.host` for consistency with other plugins. - `gpg_provider` is set in client while profile is connecting, so the instance is easily accessible to plugins depending on XEP-0373 rel 381

version: "3.6"
services:

  prosody:
    image: libervia/prosody:demo
    build: prosody-demo

  backend:
    image: libervia/backend:dev-demo
    build: backend-dev-demo

  web:
    image: libervia/web:dev-demo
    build: libervia-web-dev-demo