Airflow in docker

To Note: *Ensure the line endings are in UNIX. Else building build docker image on Windows machine will result in failure.

This repo is used as a supporting material for the original GoSmarten blog post which I wrote on implementing Airflow for development. You can read the full article at www.gosmarten.com/airflow

The docker image used in the post is mostly based in Puckel's version which you can find here: https://github.com/puckel/docker-airflow