Dockerfile

FROM alpine:3.10.0

RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories;

RUN apk update && apk upgrade
RUN apk add squid \
            stunnel \
            bash;

WORKDIR /root

COPY stunnel.pem /etc/stunnel/stunnel.pem

RUN sed -i 's/http_access deny all/http_access allow all/g' /etc/squid/squid.conf; \
    sed -i 's/http_port 3128/http_port 127.0.0.1:3128/g' /etc/squid/squid.conf;

RUN sed -i 's/\/run\/stunnel\/stunnel.pid/\/var\/run\/stunnel\/stunnel.pid/g' /etc/stunnel/stunnel.conf; \
    sed -i 's/#verify = 2/verify = 3/g' /etc/stunnel/stunnel.conf; \
    sed -i 's/#CAfile = \/etc\/stunnel\/certs.pem/CAfile = \/etc\/stunnel\/stunnel.pem/g' /etc/stunnel/stunnel.conf; \
    sed -i 's/client = yes/#client = yes/g' /etc/stunnel/stunnel.conf;

RUN echo "" >> /etc/stunnel/stunnel.conf; \
    echo "foreground = yes" >> /etc/stunnel/stunnel.conf; \
    echo "delay = no" >> /etc/stunnel/stunnel.conf; \
    echo "output = /var/log/stunnel/stunnel.log" >> /etc/stunnel/stunnel.conf; \
    echo "" >> /etc/stunnel/stunnel.conf; \
    echo "[sproxy]" >> /etc/stunnel/stunnel.conf; \
    echo "accept = 8000" >> /etc/stunnel/stunnel.conf; \
    echo "connect = 127.0.0.1:3128" >> /etc/stunnel/stunnel.conf; \
    echo "cert = /etc/stunnel/stunnel.pem" >> /etc/stunnel/stunnel.conf;

RUN mkdir -p /var/log/stunnel; \
    chown -R stunnel:stunnel /var/log/stunnel; \
    mkdir -p /var/run/stunnel; \
    chown -R stunnel:stunnel /var/run/stunnel;

RUN touch docker-startup.sh; \
    chmod 755 docker-startup.sh;
RUN echo '#!/bin/bash' >> docker-startup.sh; \
    echo "squid && stunnel;" >> docker-startup.sh;

EXPOSE 8000
CMD ["/root/docker-startup.sh"]