anchor.diff:      && apt-get install -y \
           nodejs
   
  -# install database clients for debugging
  -RUN echo 'deb http://apt.postgresql.org/pub/repos/apt/ jessie-pgdg main' >> /etc/apt/sources.list.d/postgresql.list \
  -    && wget --no-check-certificate -q https://www.postgresql.org/media/keys/ACCC4CF8.asc -O- | apt-key add - \
  +# install database clients for debugging (https://www.postgresql.org/download/linux/debian/)
  +RUN echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list \
  +    && wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - \
       && apt-get update && apt-get install -y \
           postgresql \
           postgresql-client \
  
positive.code:     && apt-get clean \
      && rm -rf /var/lib/apt/lists/*
  
  
  # install python
  RUN apt-get update && apt-get install -y --no-install-recommends \
      python-dev \
      ca-certificates \
      && wget https://bootstrap.pypa.io/get-pip.py \
      && python get-pip.py \
      && pip install --upgrade pip setuptools \
      && apt-get clean \
      && rm -rf /var/lib/apt/lists/*
  
  # install dependencies of the HaploPainter.pl script used to generate static pedigree images
  RUN apt-get update && apt-get install -y --no-install-recommends \
  
negative.code:     && curl https://sdk.cloud.google.com | bash \
      && apt-get update && apt-get install -y \
          gcc \
          libpq-dev \
      && pip install gsutil
  
  