python -m SimpleHTTPServer 7000

FROM ubuntu:14.04
COPY index.html
FROM python:latest
EXPOSE 80
CMD ["python SimpleHTTPServer 7000", "-m"]

FROM python:3
ADD my_script.py /
RUN pip install pystrich
CMD [ "python", "-m", "SimpleHTTPServer", "7000"]

docker build -t python-myapp (where -t argument is the image name)

docker run python-myapp