Cython in a Docker container

app.py

import hello

hello.say_hello_to('Dario')

Dockerfile

FROM python:3.6

WORKDIR /app
ADD . /app
RUN pip install -r requirements.txt

RUN python setup.py build_ext --inplace

ENTRYPOINT ["python"]
CMD ["app.py"]

hello.pyx

def say_hello_to(name):
    print("Hello %s!" % name)

requirements.txt

Cython==0.26

setup.py

from distutils.core import setup
from Cython.Build import cythonize

setup(
    name= 'Hello world',
    ext_modules = cythonize("hello.pyx")
)