anchor.diff:  ENV OPENVPN_VER=2.4.1
   RUN curl -L -o openvpn-${OPENVPN_VER}.tar.gz https://github.com/OpenVPN/openvpn/archive/v${OPENVPN_VER}.tar.gz  &&\
       tar -xf openvpn-${OPENVPN_VER}.tar.gz &&\
  -    cd openvpn-${OPENVPN_VER} && libtoolize --force && aclocal && autoheader && automake --force-missing --add-missing &&\
  +    cd openvpn-${OPENVPN_VER} &&\
  +    libtoolize --force && aclocal && autoheader && automake --force-missing --add-missing &&\
       autoconf &&\
       ls /opt/apps/green/include/lzo &&\
       ./configure --prefix=/opt/apps/green CFLAGS="-I/opt/apps/green/include" LDFLAGS="-L/opt/apps/green/lib" OPENSSL_LIBS="-L/opt/apps/green/lib -lssl -lcrypto" OPENSSL_CFLAGS="-I/opt/apps/green/include" --disable-debug --disable-dependency-tracking --disable-silent-rules --with-crypto-library=openssl &&\
  
positive.code: 
  
  
  # ====================================== remove what we don't need  ==============================
  
  RUN mkdir -p /opt/apps/green/bin ;\
  
negative.code: 
  RUN git clone https://github.com/fukuchi/libqrencode.git &&\
      cd libqrencode &&\
      libtoolize --force && aclocal && autoheader && automake --force-missing --add-missing &&\
      autoconf &&\
      ./configure CFLAGS="-I/opt/apps/green/include" LDFLAGS="-L/opt/apps/green/lib" --prefix=/opt/apps/green &&\
      make &&\
      make install
  
  
  RUN git clone https://github.com/google/google-authenticator-libpam.git &&\
  