anchor.diff: -FROM debian:stretch
  +FROM python:3.6
   
   # Superset version
   ARG SUPERSET_VERSION=0.28.0
  
positive.code: EXPOSE 8088
  HEALTHCHECK CMD ["curl", "-f", "http://localhost:8088/health"]
  CMD ["gunicorn", "superset:app"]
  USER superset
  
negative.code:         libldap2-dev \
          libpq-dev \
          libsasl2-dev \
          libssl-dev && \
      apt-get clean && \
      rm -r /var/lib/apt/lists/* && \
      curl https://raw.githubusercontent.com/${SUPERSET_REPO}/${SUPERSET_VERSION}/requirements.txt -o requirements.txt && \
      pip install --no-cache-dir -r requirements.txt && \
      pip install --no-cache-dir \
          Werkzeug==0.12.1 \
          flask-cors==3.0.3 \
          flask-mail==0.9.1 \
  