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pythondockermesos

How to write a Dockerfile for a custom python project?

I'm pretty new to Docker, and I need to create the container to run Docker container as an Apache Mesos task.

The problem is that I can't find any relevant examples. They all are centered around Web development, which is not my case.

I have a pure Python project with large number of dependencies ( like Berkeley Caffe or OpenCV ). How to write a Docker file to properly enroll all dependecies ( and how to find them out?)

Solution

  • The docker hub registry contains a number of official language images, which you can use as your base image.

    The instructions tell you how you can build your python project, including the importation of dependencies.

    ├── Dockerfile                <-- Docker build file
├── requirements.txt          <-- List of pip dependencies
└── your-daemon-or-script.py  <-- Python script to run

    Image supports both Python 2 and 3, you specify this in the Dockerfile:

    FROM python:3-onbuild
CMD [ "python", "./your-daemon-or-script.py" ]

    The base image uses special ONBUILD instructions to all the hard work for you.