FROM jitsi/base RUN \ echo "deb http://ftp.debian.org/debian stretch-backports main" > /etc/apt/sources.list.d/backports.list && \ apt-dpkg-wrap apt-get update && \ apt-dpkg-wrap apt-get install -t stretch-backports -y prosody && \ apt-cleanup && \ rm -rf /etc/prosody COPY rootfs/ / EXPOSE 5222 5269 5347 5280 5281 VOLUME /config