anchor.diff: -FROM ubuntu:20.04 as BUILD
  +FROM ubuntu:22.04 as BUILD
   ENV TZ=US
   ENV CC=/usr/bin/clang
   ENV CXX=/usr/bin/clang++
  
positive.code:     apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  RUN apt-get update && apt-get install -y --no-install-recommends wget gnupg2 ca-certificates && \
      # LLVM/Clang 10
      wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key 2>/dev/null | APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn apt-key add - && \
      echo "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-12 main" | tee /etc/apt/sources.list.d/llvm.list && \
      # CMake
      wget -O - https://apt.kitware.com/keys/kitware-archive-latest.asc 2>/dev/null | APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn apt-key add - && \
      echo "deb https://apt.kitware.com/ubuntu/ focal main" | tee /etc/apt/sources.list.d/cmake.list && \
      # TZ Stupidity
      ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone && \
      apt-get update && apt-get install -y --no-install-recommends \
  
negative.code: RUN apt-get update && apt-get install -y --no-install-recommends \
      libxml2 \
      python3 \
      libssl \
      libpython3.10 \
      libboost-python1.74.0 \
      libboost-filesystem1.74.0 \
      libboost-system1.74.0 \
      libboost-date-time1.74.0 \
      libsodium23 \
      libopus0 \
      aspell \
  