Description

This Docker image is simple base image for Python apps.
It uses app.yaml manifest file located in child Docker image.

app.yaml describe OS dependencies needed by Python packages during installation of Python packages enlisted inside standard requirements.txt file. It distincts build time and run time dependencies. So for example during Python package installation you will need to have header files for libraries and various compilers like gcc. But after installation is complete you will needed only libraries itself without headers and compilers which uses usually more then 200 MBytes.

Usage

Use one of following base images for your image.

tarhan/python-base:3.5.4 - for Python 3.5.4
tarhan/python-base:3.6.3 - for Python 3.6.3

Your child image must have at least two files app.yaml describing OS dependencies and requirements.txt describing Python dependencies.
requirements.txt is standard file enlist packages which will be installed by pip.

app.yaml structure must be similar to following:

name: "test name"

dependencies:
  alpine:
    runtime:
      - openssl
      - libffi
      - libxml2
      - libxslt
    buildtime:
      - openssl-dev
      - libffi-dev
      - libxml2-dev
      - libxslt-dev

This example OS dependencies needed by Python package Scrapy. During child image building OS installs more than 200 MBytes of build time dependencies. After Scrapy building complete all build time dependencies will be removed. Remaining OS libraries will require only 4 MBytes instead of potential 200 MBytes.