Python app does not print anything when running detached in docker

Question

I have a Python (2.7) app which is started in my dockerfile:

CMD [\"python\",\"main.py\"]

main.py prints some strings when it is s

Answer 1

If you want to add your print output to your Flask output when running docker-compose up, add the following to your docker compose file.

web:
  environment:
    - PYTHONUNBUFFERED=1

https://docs.docker.com/compose/environment-variables/