anchor.diff:  
   RUN apt update
   RUN apt install -y curl
  -RUN curl -sL https://deb.nodesource.com/setup_7.x | bash -
  +RUN curl -sL https://deb.nodesource.com/setup_8.x | bash -
   RUN apt install -y nodejs
   
   ADD . /glasnost_app
  
positive.code: FROM elixir:1.4.4
  
  ENV DEBIAN_FRONTEND=noninteractive
  
  
negative.code:  rm -rf ./assets
  
  WORKDIR /glasnost_app
  
  RUN mix compile
  RUN mix ecto.create
  