anchor.diff:  COPY . .
   # This might look a bit alien but it's copying in everything from
   # the current directory relative to the Dockerfile, over to the
  -# /my_dockerized_app folder inside of the Docker image.
  +# /orats_base folder inside of the Docker image.
   #
   # We can get away with using the . for the second argument because
   # this is how the unix command cp (copy) works. It stands for the
  
positive.code: 
  WORKDIR $INSTALL_PATH
  # We're going to be executing a number of commands below, and
  # having to CD into the /my_dockerized_app folder every time would be
  # lame, so instead we can set the WORKDIR to be /my_dockerized_app.
  #
  # By doing this, Docker will be smart enough to execute all
  # future commands from within this directory.
  
negative.code: # packages to ensure that we can compile assets (nodejs) and
  # communicate with PostgreSQL (libpq-dev).
  
  ENV INSTALL_PATH /orats_base
  # The name of the application is orats_base and while there
  # is no standard on where your project should live inside of the Docker
  # image, I like to put it in the root of the image and name it
  # after the project.
  