anchor.diff:          gfortran \
           libc-dev \
           musl-dev \
  -        openblas-dev@testing \
  +        openblas-dev \
           pkgconf \
           pkgconfig \
   # Clean up (apk and pip caches, NumPy sources, precompiled bytecode).
  
positive.code: # NumPy needs (a line of) patching to link against musl.
  ADD numpy-musl.patch /tmp/numpy-musl.patch
  
  # Packages needed to build NumPy and SciPy.
  RUN apk add --no-cache \
          fortify-headers \
          g++ \
          gcc \
          gfortran \
          libc-dev \
          musl-dev \
          openblas@testing \
          openblas-dev@testing \
  
negative.code: 
  MAINTAINER wrwrwr <docker@wr.waw.pl>
  
  # The provided Gunicorn configuration specifies this port.
  EXPOSE 8192
  
  # We need the testing repository for OpenBLAS and its dependencies.
  