anchor.diff: -FROM nikolaik/python-nodejs:python3.8-nodejs10
  +FROM python:3.8
   
   # Declare environment variables
   ENV DEBIAN_FRONTEND=noninteractive
  
positive.code:         locales \
          openjdk-11-jre \
          postgresql-client \
          python3-virtualenv \
          rsync \
          runit-init \
          vim \
  
negative.code: COPY . "${KOBOCAT_SRC_DIR}"
  
  # Install `pip` packages
  RUN python3 -m venv "$VIRTUAL_ENV"
  ENV PATH="$VIRTUAL_ENV/bin:$PATH"
  RUN pip install  --quiet --upgrade pip && \
      pip install  --quiet pip-tools
  