anchor.diff:      # build
       apt-get update -y && \
       apt install -y libssl-dev build-essential automake python libcurl3-dev && \
  -    npm install nodegit --build-from-source > /dev/null && \
       npm install && \
       npm run build && \
       # prepare for production
  
positive.code: 
  COPY . /app
  WORKDIR "/app"
  ENV NODE_ENV production
  
  RUN cd /app/ && \
      # remove dev stuff
  
negative.code:     apt-get -y purge --auto-remove build-essential automake python && \
      rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  ENV NODE_ENV production
  CMD ["node", "/app/server/index"]
  