FROM arm64v8/alpine:edge

ENV UID=991
ENV GID=991

RUN mkdir /opt/synapse
RUN addgroup --gid "$GID" synapse
RUN adduser \
    --disabled-password \
    --gecos "" \
    --home /opt/synapse \
    --ingroup synapse \
    --no-create-home \
    --uid "$UID" \
    synapse

RUN chown -R synapse:synapse /opt/synapse

RUN apk add synapse
RUN apk add tini

EXPOSE 8008/tcp

VOLUME /media_store

USER synapse
WORKDIR /opt/synapse

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["/usr/bin/synctl", "--no-daemonize", "start", "/etc/synapse/homeserver.yaml"]