How to run python code from linux via a docker containing a specific python version

Question

I have a linux server running in which I want to be able to run some python scripts. To do so, I created a docker image of python (3.6.8) with some specific dependencies to run my code.

I am new to linux command line and need help on how to write a line that would run a given python script based on my docker (python 3.6.8)

My server's directory structure looks like this :

My docker is named geomatique_python and its image is located in docker_image.

As for the structure of the code itself, I am starting from scratch and am looking for some hints and advices.

Thanks

It will be vastly easier to avoid Docker and just install Python on your host, in the unusual event you don’t already have it. — David Maze
– David Maze, Commented Aug 28, 2019 at 17:42
Why are you using Docker - Would a virtual env work for you? — Joe
– Joe, Commented Aug 28, 2019 at 17:43
Long story short, I know this is not a typical use case of Docker, but I rely on some specific version of a few libraries that I need to set in stone, hence the docker containing only Python and some specific versions of a few libraries. — Maxime Campeau
– Maxime Campeau, Commented Aug 28, 2019 at 17:55
@DavidMaze I disagree, docker for everything, made my life easier especially in terms of version management, e.g. swapped virtualenv / virtualenvwrapper with docker and never looked back. Managing multiple versions of anything on an OS can become a pain (PATH settings, etc). @OP, is a typical use-case for me, really depends on who you ask and what that person's experience with docker is. — masseyb
– masseyb, Commented Aug 28, 2019 at 21:24

masseyb · Accepted Answer · 2019-08-28 22:23:52Z

1

I'm very much for a all the things in docker approach. Ref. your mention of having specific versions set in stone, the declaritive nature of docker is great for that. You can extend an official python docker image with your libraries then bind-mount the folders into your container during the run. A minimal project might look like:

.
├── app.py
└── Dockerfile

My app.py is a simple requests script:

#!/usr/bin/env python3                                                                                                                                                                                  

import requests

r = requests.get('https://api.github.com')

if r.status_code == 200:
    print("HTTP {}".format(r.status_code))

My Dockerfile contains the runtime dependencies for my app:

FROM python:3.6-slim

RUN python3 -m pip install requests

Note: I'm extending the official python image in this example.

After building the docker image (i.e. docker build --rm -t so:57697538 .) you can run a container from the image bind-mounting the directory that contains the scripts inside the container and execute them: docker run --rm -it -v ${PWD}:/src --entrypoint python3 so:57697538 /src/app.py

Admittedly for python virtualenv / virtualenvwrapper can be convenient however it's very much python-only whereas docker is language agnostic.

answered Aug 28, 2019 at 22:23

masseyb

4,2281 gold badge20 silver badges31 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Maxime Campeau Over a year ago

Thats very clear. I'll give it a try. Thank you masseyb.

Collectives™ on Stack Overflow

How to run python code from linux via a docker containing a specific python version

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related