comp AP gateway: convert pubsub item retractation to AP `Delete` activity: when an item `retract` is received from a node from which an AP actor is subscribed, a corresponding `Delete` activity is created and sent to AP followers. Trying to retract an item from a virtual node of the gateway pubsub service now return a `forbidden` stanza error (those nodes are handled on AP side and thus are not owned by XMPP entities). rel 367

version: "3.6"
services:

  backend:
    image: "libervia/backend:${DOCKER_LIBERVIA_REV:-dev}"
    build:
      context: backend-dev
      args:
        REVISION: "${DOCKER_LIBERVIA_REV:-}"

  web:
    image: "libervia/web:${DOCKER_LIBERVIA_REV:-dev}"
    build:
      context: libervia-web-dev
      args:
        REVISION: "${DOCKER_LIBERVIA_REV:-}"
    depends_on:
      - backend