FROM arm64v8/alpine:latest

ENV UID=991
ENV GID=991

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

RUN apk add murmur
RUN apk add tini

RUN chown murmur:murmur /etc/murmur.ini
RUN ln -s /dev/stdout /var/log/murmur.log

COPY init.sh /usr/local/bin/init.sh

VOLUME /var/lib/murmur

EXPOSE 64738/tcp
EXPOSE 64738/udp

USER murmur
WORKDIR /opt/murmur

ENTRYPOINT ["/sbin/tini", "--"]
CMD ["init.sh", "murmurd"]