Docker to run the Flask app

A simple Dockerfile to create a Docker image. You might need a lot more complex one for your application, but the general usage will be the same.

FROM python:3.14
WORKDIR /workdir
RUN pip install flask
CMD ["flask", "run", "--host", "0.0.0.0"]

We also have a .dockerignore file to make the building of the image faster.

__pycache__
.git
.pytest_cache

We can (and probably should) build the image manually with the following command. This will speed up the tests as the test will be able to reuse this image. The name of the image does not really matter here.

$ docker build -t myimg .

We can run the container manually

docker run --rm -v$(pwd):/workdir -p5001:5000 myimg

Then we can access the web site from our computer using this address:

http://localhost:5001