Containerized environment and first cookbook

[rachhouse]

Overview

This PR includes the first stage of the tutorial series on integrating GX into an Airflow pipeline. The key pieces are:

• A README with instructions on how to run the tutorial locally
• A tested, working Docker compose framework that runs: Airflow, Postgres, and JupyterLab
• A JupyterLab notebook ("cookbook") that walks the user through integrating GX data validation in an Airflow pipeline.
• Tests for notebook and Airflow pipeline code.

This first notebook uses a happy path to familiarize the user with the relevant pieces (before data validation fails in the pipeline in the next notebook!)

Here are direct links to the key PR files:

• Repo root directory
• README
• Cookbook 1: Validate data during ingestion (happy path)

Review request

I'm not looking for an exhaustive review of all the PR files. Here is what I'd appreciate in your review:

• [Does the tutorial run?] Please use the README instructions to run the tutorial locally and work through Cookbook 1. Are you able to run Cookbook 1 successfully? Do you encounter any errors or unexpected behavior?

Important

Since this work is in a branch, you'll just need to switch to the PR branch once you download the repo:

git clone https://github.com/greatexpectationslabs/tutorial-gx-in-the-data-pipeline.git

git checkout env-and-ci

• [Is the tutorial content understandable?] I've kept the README and notebook text relatively terse in an effort to keep it direct, simple, and more easily maintainable. Are there any sections that are difficult to understand or need some work before this goes live?

[adeola-ak]

Amazing work, Rachel! The tutorial was easy to follow, informative, and very concise. It covered great material which will be extremely helpful to many users! I had no problem getting started or getting moving. Approving, however, there are just a few little points that need a quick update:

1. looks like an admonition didn't properly show up here:

2. a few broken image links:

3. lastly, not sure if those cells at the end of the summary are meant to be there.

[rachhouse]

@adeola-ak I've done some experimenting and reading, and I think the reason the images aren't showing up in the GitHub rendering of the notebook is because the repo isn't public (other users have noted running into this particular problem). I'm going to go ahead and merge this PR and make the repo public. If I still see the image issue, I'll try again to fix it.

Thanks again for the review!