component AP gateway: message retractation => AP deletion Convert XEP-0424 message retractation request to suitable AP delete activity. The message workflow and its triggers are now used instead of a direct observer, as it is now possible to do so with component, and this let other plugin to parse and eventually update metadata. rel 367

ARG REVISION
FROM libervia/web:${REVISION:-dev}

LABEL maintainer="Goffi <tmp_dockerfiles@goffi.org>"

ARG DEBIAN_FRONTEND=noninteractive

USER root

COPY --chown=root:root libervia.conf /etc/libervia.conf

WORKDIR /home/libervia
USER libervia