anchor.diff:  RUN apt-get update && apt-get install -y --no-install-recommends \
       libxml2 \
       python3 \
  -    libpython3.8 \
  -    libboost-python1.71.0 \
  -    libboost-filesystem1.71.0 \
  -    libboost-system1.71.0 \
  -    libboost-date-time1.71.0 \
  +    libssl \
  +    libpython3.10 \
  +    libboost-python1.74.0 \
  +    libboost-filesystem1.74.0 \
  +    libboost-system1.74.0 \
  +    libboost-date-time1.74.0 \
       libsodium23 \
       libopus0 \
       aspell \
  
positive.code: FROM ubuntu:20.04 as BUILD
  ENV TZ=US
  ENV CC=/usr/bin/clang
  ENV CXX=/usr/bin/clang++
  
negative.code:     aspell-en \
      zlib1g-dev && \
      apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* && \
      ln -s /usr/bin/clang-14 /usr/bin/clang && \
      ln -s /usr/bin/clang++-14 /usr/bin/clang++
  
  WORKDIR /build
  
  