comp AP gateway: publish, (un)subscribe/(un)follow, public subscription/following/followers: this patch implements those major features: - `publish` is implemented on virtual pubsub service, thus XMPP entities can now publish to AP using this service - replies to XMPP items are managed - `inReplyTo` is filled when converting XMPP items to AP objects - `follow` and `unfollow` (actually an `undo` activity) are implemented and mapped to XMPP's (un)subscribe. On subscription, AP actor's `outbox` collection is converted to XMPP and put in cache. Subscriptions are always public. - `following` and `followers` collections are mapped to XMPP's Public Pubsub Subscription (which should be XEP-0465, but the XEP is not yet published at the time of commit), in both directions. - new helper methods to check if an URL is local and to get JID from actor ID doc will follow to explain behaviour rel 365

FROM prosody/prosody

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

ARG DEBIAN_FRONTEND=noninteractive

# we synchronize tls-cert group with the one in libervia-web/libervia-backend
RUN addgroup tls-cert --gid 9999 && adduser prosody tls-cert && \
    # we want third party modules
    apt-get update && apt-get install -y --no-install-recommends mercurial && \
    mkdir -p /usr/local/share/prosody && \
    hg clone https://hg.prosody.im/prosody-modules /usr/local/share/prosody/modules && \
    chown -R prosody:prosody /usr/local/share/prosody

COPY --chown=root:prosody prosody.cfg.lua /etc/prosody/prosody.cfg.lua
COPY --chown=root:tls-cert certificates/server1.test/cert.pem /usr/share/libervia/certificates/server1.test.pem
COPY --chown=root:tls-cert certificates/server1.test/key.pem /usr/share/libervia/certificates/server1.test-key.pem