anchor.diff:  RUN mkdir /opt/static-assets
   
   # pre-build `tar` so we don't have to every time
  -RUN cd /tmp && curl https://ftp.gnu.org/gnu/tar/tar-1.30.tar.gz | tar zxf - && \
  +RUN cd /tmp && curl -L https://ftp.gnu.org/gnu/tar/tar-1.30.tar.gz | tar zxf - && \
         cd tar-* && \
           FORCE_UNSAFE_CONFIGURE=1 ./configure && \
           make LDFLAGS=-static && \
  
positive.code:       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 - && \
        cd btrfs-progs-* && \
        LDFLAGS=-static ./configure --disable-documentation && \
        make && \
  
negative.code:       apt-get update && \
        apt-get -y install bzip2 file flex bison && \
        cd /tmp && \
        curl -L https://www.netfilter.org/projects/iptables/files/iptables-1.6.2.tar.bz2 | tar jxf - && \
        curl -L https://www.netfilter.org/projects/libmnl/files/libmnl-1.0.4.tar.bz2 | tar jxf - && \
        curl -L https://www.netfilter.org/projects/libnftnl/files/libnftnl-1.0.9.tar.bz2 | tar jxf - && \
        mkdir /opt/static-assets/iptables && \
        cd libmnl-* && \
          ./configure && \
  