anchor.diff:    echo "nvidia,quillnvidia,p2597-0000+p3310-1000nvidia,tegra186" >\
       /etc/tegra-soc/device-tree/compatible
   
  -RUN apt-get install -y \
  +# linux4tegra
  +RUN export DEBIAN_FRONTEND=noninteractive; \
  +  apt-get autoremove -y && \
  +  apt-get dist-upgrade -y && \
  +  apt-get install -y  \
  +  -o "Dpkg::Options::=--force-confdef"  \
  +  -o "Dpkg::Options::=--force-confnew"  \
  +  mesa-utils libgles2-mesa-dev libsdl2-dev libblas3 liblapack3 && \
  +  apt-get install -y \
     -o "Dpkg::Options::=--force-confdef"  \
     -o "Dpkg::Options::=--force-confnew"  \
     /usr/src/l4t_deb_packages/*.deb && \
  
positive.code: 
  RUN systemctl set-default graphical.target && \
      systemctl mask tmp.mount && \
      rm /etc/systemd/system/nvwifibt.service && \
      echo "nvidia	ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers && \
      find /etc/systemd/system \
           /lib/systemd/system \
           \( -path '*.wants/*' \
           -name '*swapon*' \
           -or -name '*ntpd*' \
           -or -name '*resolved*' \
           -or -name '*NetworkManager*' \
           -or -name '*remount-fs*' \
           -or -name '*getty*' \
           -or -name '*systemd-sysctl*' \
           -or -name '*.mount' \
           -or -name '*remote-fs*' \) \
           -exec echo \{} \; \
           -exec rm \{} \;
  
  WORKDIR /
  ENTRYPOINT ["/lib/systemd/systemd"]
  
negative.code:   cd ../ && rm -rf /sources/l4t_debs_workdir
  
  # Ubuntu upstream
  FROM ubuntu:18.04 as stage2
  
  # NVIDIA upstream
  # FROM nvcr.io/nvidia/l4t-base:r32.5.1
  
  # setup environment
  ENV LANG=C.UTF-8 \
  