FROM python:3.6
ADD . /app
WORKDIR /app
RUN pip install flask gunicorn
EXPOSE 8000
CMD ["gunicorn", "-b", "0.0.0.0:8000", "app"]

docker run --rm --name webserver -d -p 80:80 nginx:alpine

docker exec -it webserver sh

docker diff webserver

docker commit webserver nginx:my_version