anchor.diff:  
   # don't work in the default location, it can cause problems
   WORKDIR /tmp/builder
  +
  +COPY build/rlib-build.R build/
  +RUN mkdir -p $R_LIBS_USER
  +RUN Rscript build/rlib-build.R $R_LIBS_USER 2>&1 | grep '^\*'
   
   # build tools from other repos
   ADD build/opt-build.sh build/
  
positive.code: RUN apt-get install -yq --no-install-recommends libssl-dev
  RUN apt-get install -yq --no-install-recommends nettle-dev
  RUN apt-get install -yq --no-install-recommends time
  RUN apt-get install -yq --no-install-recommends libcairo2-dev
  RUN apt-get install -yq --no-install-recommends gfortran
  RUN apt-get install -yq --no-install-recommends libblas-dev
  
negative.code: pkg-config \
  libgd-dev \
  libdb-dev \
  r-base\
  r-base-dev\
  libboost-iostreams-dev \
  unattended-upgrades && \
  unattended-upgrade -d -v && \
  