anchor.diff:  
   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.
  
positive.code:         gfortran \
          libc-dev \
          musl-dev \
          openblas-dev@testing \
          pkgconf \
          pkgconfig \
  # Clean up (apk and pip caches, NumPy sources, precompiled bytecode).
  
negative.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, with runtime dependencies
  # explicitely named (so they do not get removed during clean up).
  RUN apk add --no-cache \
          fortify-headers \
          g++ \
          gcc \
          gfortran \
          libc-dev \
          libstdc++ \
          musl-dev \
          openblas@testing \
          openblas-dev@testing \
  