anchor.diff:      tar xzf libsodium.tar.gz && \
       rm -f libsodium.tar.gz && \
       cd libsodium-${LIBSODIUM_VERSION} && \
  -    ./configure --disable-dependency-tracking --enable-minimal --enable-opt --prefix=/opt/libsodium && \
  +    ./configure --disable-dependency-tracking --enable-minimal --prefix=/opt/libsodium && \
       make check && make install && \
       echo /opt/libsodium/lib > /etc/ld.so.conf.d/libsodium.conf && ldconfig && \
       rm -fr /tmp/*
   
   ENV DNSCRYPT_PROXY_VERSION 1.6.0
   ENV DNSCRYPT_PROXY_SHA256 7703a41a1040fc30b19fdfbbaba36b411e66d998584b0e2fa5088f734f4f86be
  -ENV DNSCRYPT_PROXY_DOWNLOAD_URL http://download.dnscrypt.org/dnscrypt-proxy/dnscrypt-proxy-${DNSCRYPT_PROXY_VERSION}.tar.gz
  +ENV DNSCRYPT_PROXY_DOWNLOAD_URL https://download.dnscrypt.org/dnscrypt-proxy/dnscrypt-proxy-${DNSCRYPT_PROXY_VERSION}.tar.gz
   
   RUN set -x && \
       mkdir -p /tmp/src && \
  
positive.code:     apt-get autoremove -y && apt-get clean && \
      rm -fr /tmp/* /var/tmp/*
  
  ENV LIBSODIUM_VERSION 1.0.8
  ENV LIBSODIUM_SHA256 c0f191d2527852641e0a996b7b106d2e04cbc76ea50731b2d0babd3409301926
  ENV LIBSODIUM_DOWNLOAD_URL https://download.libsodium.org/libsodium/releases/libsodium-${LIBSODIUM_VERSION}.tar.gz
  
  RUN set -x && \
  
negative.code: 
  ENV UNBOUND_VERSION 1.5.8
  ENV UNBOUND_SHA256 33567a20f73e288f8daa4ec021fbb30fe1824b346b34f12677ad77899ecd09be
  ENV UNBOUND_DOWNLOAD_URL https://www.unbound.net/downloads/unbound-${UNBOUND_VERSION}.tar.gz
  
  RUN set -x && \
      apt-get update && \
  