Create SSH service reverse proxy

Dockerfile

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+FROM debian
+
+ADD . /app/
+
+WORKDIR /app
+
+RUN apt-get update
+
+RUN apt-get install -y gcc automake autoconf libssl-dev pkg-config git make ppp ssh
+
+RUN git clone https://github.com/adrienverge/openfortivpn
+
+WORKDIR /app/openfortivpn
+
+RUN ./autogen.sh
+
+RUN ./configure --prefix=/usr/local --sysconfdir=/etc
+
+RUN make
+
+RUN make install
+
+WORKDIR /app
+
+CMD bash docker-entrypoint.sh
+
+EXPOSE 22

docker-entrypoint.sh

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+#!/bin/bash
+
+openfortivpn -c vpn.conf & 
+
+sleep 3s
+
+while true
+do
+    ssh -o "ExitOnForwardFailure yes" -NL 22:192.168.80.240:22 localhost
+    sleep 1s
+done

vpn.conf

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+host = 140.116.163.158
+port = 443
+username = team01@gec2018.twisc.ncku.edu.tw
+password = teama01
+set-routes = 1
+set-dns = 0
+trusted-cert = 14191abc008ac178756710c3e24df2051cc50475b04a973eb586d21fd8132207