I have a Dockerfile like this:
FROM python:3.9
WORKDIR /app
RUN apt-get update && apt-get upgrade -y
RUN curl -sSL https://raw.githubusercontent.com/python-poetry/poetry/master/install-poetry.py | python -
ENV PATH /root/.local/bin:$PATH
COPY pyproject.toml poetry.lock Makefile ./
COPY src ./src
COPY tests ./tests
RUN poetry install && poetry run pytest && make clean
CMD ["bash"]
As you can see that tests will be run during the build. It could slow down the build little bit, but will ensure that my code runs in the Docker container.
If tests pass in my local machine, does not mean that they will also pass in the docker container.
Suppose I add a feature in my code that uses chromedriver or ffmpeg binaries, that is present in my system, so tests will pass in my system.
But, suppose I forget to install those dependencies in the Dockerfile, then the docker build will fail (as tests are running during the build)
What is the standard way of doing what i am trying to do ?
Is my Dockerfile good ? or should i do something differently ?
Run pytest on image construction makes no sense to me. However, what you can do is run tests after the image is completed. In your pipeline you should have something like this: