FROM python

COPY websockify-*.tar.gz /

RUN python3 -m pip install websockify-*.tar.gz
RUN rm -rf /websockify-* /root/.cache

VOLUME /data

EXPOSE 80

WORKDIR /opt/websockify

ENV LOCALPORT="80"
ENV DEST="box.imzadi.de:23"
ENV OPTS="--web /data"

RUN cat <<'EOF' > /entrypoint.sh
#!/bin/sh
echo "Websockify"
echo "----------"
echo "Options    : $OPTS"
echo "Local Port : $LOCALPORT"
echo "Destination: $DEST"
/usr/local/bin/websockify $OPTS $LOCALPORT $DEST
EOF

RUN chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]