debug python from docker container

docker-compose.yaml

# You should add the line 
# `stdin_open: true` and 
# `tty: true` on your docker-compose file. 
# Then, just add the `__import__("ipdb").set_trace()` as 
# usually you do in your python code. 

version: "3"
services:
  app_tests:
    build: .
    stdin_open: true
    tty: true
    command: ./run_my_tests.sh