anchor.diff:         pkg-config \
          zlib1g \
   			 zlib1g-dev \
  -    && curl -o libssl.deb -SL http://security.debian.org/debian-security/pool/updates/main/o/openssl/libssl1.0.0_1.0.1t-1+deb7u2_amd64.deb \
  -    && curl -o libssl-dev.deb -SL http://security.debian.org/debian-security/pool/updates/main/o/openssl/libssl-dev_1.0.1t-1+deb7u2_amd64.deb \
  -    && dpkg -i libssl.deb && rm libssl.deb \
  -    && dpkg -i libssl-dev.deb && rm libssl-dev.deb \
       && curl -o tinc.tar.gz -SL https://www.tinc-vpn.org/packages/tinc-${TINC_VERSION}.tar.gz \
       && mkdir -p /container/tinc-sources \
       && tar -xzf tinc.tar.gz --strip 1 -C /container/tinc-sources \
  
positive.code: 			 ca-certificates \
  			 curl \
         gcc \
         # libssl1.0.0 \ v1.0.0 not available in debian stretch
         # libssl-dev \
         liblzo2-2 \
         liblzo2-dev \
         libncurses5 \
  
negative.code:     && cd - \
      && mkdir -p /usr/local/var/run/ \
      && apt-get remove -y --purge --auto-remove ca-certificates curl gcc  \
  		  libssl1.0-dev liblzo2-dev libncurses5-dev libreadline-dev make pkg-config zlib1g-dev \
      && rm -f tinc.tar.gz \
      && rm -rf /container/tinc-sources \
      && apt-get clean \
  