anchor.diff:      libxslt1.1 \
       libxslt1-dev \
       libyaml-dev \
  +    m4 \
       nginx \
       openssh-client \
       python-dev \
  
positive.code: 
  
  # install Tosca engine
  RUN apt-get install -y m4
  RUN pip install python-dateutil
  RUN bash /opt/xos/tosca/install_tosca.sh
  
  # configure nginx
  
negative.code: RUN mkdir /etc/ssl/private-copy; mv /etc/ssl/private/* /etc/ssl/private-copy/; rm -r /etc/ssl/private; mv /etc/ssl/private-copy /etc/ssl/private; chmod -R 0700 /etc/ssl/private; chown -R postgres /etc/ssl/private
  
  # Set postgres password to match default value in settings.py
  RUN service postgresql start
  RUN sudo -u postgres psql -c "alter user postgres with password 'password';"
  
  # Turn DEBUG on so that devel server will serve static files
  #    (not necessary if --insecure is passed to 'manage.py runserver')
  