Docker-compose and pdb

python docker pdb docker-compose
McAbra picture McAbra · Jun 15, 2015 · Viewed 15.4k times · Source

I see that I'm not the first one to ask the question but there was no clear answer to this:

How to use pdb with docker-composer in Python development?

When you ask uncle Google about django docker you get awesome docker-composer examples and tutorials and I have an environment working - I can run docker-compose up and I have a neat developer environment but the PDB is not working (which is very sad).

I can settle with running docker-compose run my-awesome-app python app.py 0.0.0.0:8000 but then I can access my application over http://127.0.0.1:8000 from the host (I can with docker-compose up) and it seems that each time I use run new containers are made like: dir_app_13 and dir_db_4 which I don't desire at all.

People of good will please aid me.

PS
I'm using pdb++ for that example and a basic docker-compose.yml from this django example. Also I experimented but nothing seems to help me. And I'm using docker-composer 1.3.0rc3 as it has Dockerfile pointing support.

Answer

Arun Kumar Nagarajan picture Arun Kumar Nagarajan · Nov 6, 2016

Use the following steps to attach pdb on any python script.

Step 1. Add the following in your yml file

stdin_open: true
tty: true

This will enable interactive mode and will attach stdin. This is equivalent for -it mode.

Step 2.

docker attach <generated_containerid>

You'll now get the pdb shell

Related questions

Docker "ERROR: could not find an available, non-overlapping IPv4 address pool among the defaults to assign to the network"

I have a directory apkmirror-scraper-compose with the following structure: . ├── docker-compose.yml ├── privoxy │   ├── config │   └── Dockerfile ├── scraper │   ├── Dockerfile │   ├── newnym.py │   └── requirements.txt └── tor └── Dockerfile I'm trying to run the following docker-compose.yml: version: '3' services: privoxy: build: ./privoxy ports: - "8118:8118" links: …

Read More
installing cPickle with python 3.5

This might be silly but I am unable to install cPickle with python 3.5 docker image Dockerfile FROM python:3.5-onbuild requirements.txt cpickle When I try to build the image $ docker build -t sample . Sending build context to Docker daemon 3.072 kB …

Read More
Can't create a docker image for COPY failed: stat /var/lib/docker/tmp/docker-builder error

I want to create a docker image. This is my work directory: Dockerfile.in test.json test.py And this is my Dockerfile: COPY ./test.json /home/test.json COPY ./test.py /home/test.py RUN python test.py When …

Read More