anchor.diff:  
   COPY --chown=rstudio:rstudio . ${REPO_DIR}
   
  +# Install some R libraries that aren't in the base image
  +COPY --chown=rstudio extras.d  /tmp/extras.d
  +# CircleCI stops printing output at 40k chars.
  +# We send stdout to a log file, and tail it a bit
  +# FIXME: Find something less sucky
  +# another hubploy #1
  +RUN chmod -R +x /tmp/extras.d && \
  +	run-parts /tmp/extras.d > /tmp/r-custom-packages.log 2>&1 && \
  +    true || ( echo FAIL ; tail /tmp/r-custom-packages.log ; false )
  +
  +RUN tail /tmp/r-custom-packages.log
  +RUN rm /tmp/r-custom-packages.log
  +
   # Install requirements.txt if it exists
   RUN [ -f ${REPO_DIR}/requirements.txt ] && \
       ${VENV_DIR}/bin/pip3 install --no-cache-dir -r ${REPO_DIR}/requirements.txt
  
positive.code: ENV HOME /home/${NB_USER}
  WORKDIR ${HOME}
  
  # Setup a LaTeX that notebook can use
  # texlive-local seems to be installed by rocker, and isn't enough
  RUN apt-get update && \
      apt-get purge --yes texlive-local && \
      apt-get install --yes texlive-xetex texlive-fonts-recommended texlive-generic-recommended && \
      apt-get clean && \
      rm -rf /var/lib/apt/lists/*
  
  
  RUN apt-get update && \
      apt-get install --yes \
  
negative.code: 
  USER ${NB_USER}
  
  
  RUN python3 -m venv ${VENV_DIR}
  
  