anchor.diff:  RUN mix local.hex --force && \
       mix local.rebar --force && \
       mix hex.info
  -
   
   WORKDIR /src
   ADD ./ /src/
  
positive.code: RUN cd /src/ && npm install && npm run deploy
  RUN mix phx.digest
  RUN mix release --env=$MIX_ENV
  
  ####
  
  
negative.code: 
  ENV LANG=C.UTF-8 LC_ALL=C.UTF-8
  
  RUN apt-get update -q && apt-get install -y build-essential libtool autoconf curl git
  
  RUN DEBIAN_CODENAME=$(sed -n 's/VERSION=.*(\(.*\)).*/\1/p' /etc/os-release) && \
      curl -q https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - && \
  