FROM python

RUN apt update && apt install -y jq && rm -rf /var/lib/apt/lists/*
RUN wget --content-disposition -P / $(curl https://api.github.com/repos/novnc/websockify/releases/latest | jq -r '.tarball_url')
RUN python3 -m pip install novnc-websockify-*.tar.gz
RUN rm -rf /novnc-websockify-* /root/.cache

RUN wget --content-disposition -P / https://github.com/rickparrish/fTelnet/archive/refs/heads/master.zip
WORKDIR /web
RUN unzip /fTelnet-master.zip &&\
	cp fTelnet-master/release/ftelnet.css . &&\
	cp fTelnet-master/release/ftelnet.norip.xfer.min.js . &&\
	cp -r fTelnet-master/release/fonts fTelnet-master/release/keyboard . &&\
	rm -rf /fTelnet-master.zip fTelnet-master
ADD web/index.html web/custom.css /web

VOLUME /data

EXPOSE 80

WORKDIR /opt/websockify

ENV WSHOST="window.location.hostname"
ENV WSPORT="80"
ENV DEST="box.imzadi.de:23"
ENV OPTS="--web /web"

RUN cat <<'EOF' > /entrypoint.sh
#!/bin/sh
echo "Websockify Container"
echo "--------------------"
echo "Container Host : $WSHOST"
echo "Container Port : $WSPORT"
echo "Destination    : $DEST"
echo "Options        : $OPTS"
/usr/local/bin/websockify $OPTS 80 $DEST
EOF

RUN cat <<'EOF' > /web/config.js
var wshost=$WSHOST;
var wsport=$WSPORT;
EOF

RUN chmod +x /entrypoint.sh

ENTRYPOINT ["/entrypoint.sh"]