anchor.diff:        apt-get -y remove liblzo2-dev libblkid-dev e2fslibs-dev libz-dev
   
   # pre-build libseccomp
  -RUN cd /tmp && \
  +RUN set -x && \
  +      cd /tmp && \
         curl -L https://github.com/seccomp/libseccomp/releases/download/v2.3.3/libseccomp-2.3.3.tar.gz | tar zxf - && \
         cd libseccomp-* && \
           ./configure --prefix=/opt/static-assets/libseccomp && \
  
positive.code:       curl https://www.netfilter.org/projects/libnftnl/files/libnftnl-1.0.9.tar.bz2 | tar jxf - && \
        mkdir /opt/static-assets/iptables && \
        cd libmnl-* && \
          ./configure --prefix=/opt/static-assets/iptables && \
          make && \
          make install && \
        cd .. && \
        cd libnftnl-* && \
          ./configure --prefix=/opt/static-assets/iptables && \
          make && \
          make install && \
        cd .. && \
  
negative.code:       rm -rf libnftnl-*
  
  # pre-build btrfs-progs
  RUN set -x && \
        apt-get update && \
        apt-get -y install liblzo2-dev libblkid-dev e2fslibs-dev libz-dev && \
        cd /tmp && \
        curl https://www.kernel.org/pub/linux/kernel/people/kdave/btrfs-progs/btrfs-progs-v4.15.tar.gz | tar zxf - && \
  