- Adds a Docker image, scripts, and configuration that install and run pytest-codeblocks on Python and shell code samples in Markdown.
- Copied from https://github.com/jstirnaman/docs-codeblocks/
- TODO: The script copies files into a tmp directory configured as a bind mount for the Docker container. We might want to replace this with the experimental `watch` feature.
- TODO: Use a secret to configure the token. As is, values subbed from the dotenv file are exposed in your Docker container history.