anchor.diff:  	  && echo "deb http://shadowsocks.org/debian wheezy main" > /etc/apt/sources.list.d/shadowsocks.list \
   	  && apt-get update -qq && apt-get install -qqy \
         shadowsocks-libev \
  -    && ln -s ${ACROSSFW_HOME}/service/shadowsocks /service/shadowsocks
  +    && ln -s ${ACROSSFW_HOME}/service/shadowsocks /service/shadowsocks \
  +    \
  +    && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  +    
   ENV SHADOWSOCKS_ENCRYPT_METHOD aes-256-cfb
   EXPOSE 8388/tcp 8388/udp
   
  
positive.code:       strongswan \
        uuid-runtime \
      && rm /etc/ipsec.secrets \
      && ln -s ${ACROSSFW_HOME}/service/ipsec /service/ipsec
  EXPOSE 500/udp 4500/udp
  
  #
  
negative.code:       pptpd \
        || true \
      && rm -f rm /var/lib/dpkg/info/pptpd.postinst \
      && ln -s ${ACROSSFW_HOME}/service/pptp /service/pptp \
      \
      && apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  EXPOSE 1723/tcp
  
  #
  