The Makefile shows what is happening. The top of the page contains a blurb, created using pandoc to convert blurb.md to HTML. At the bottom of the page, there is an index created with a tree and sed command that generates a tree of the directory and saves this as an HTML section.
The Python script generate_html.py creates an HTML table from products.csv. generate_html.py also contains placeholder HTML which gives the page its structure. The script then uses all of the previously mentioned HTMLs and stitches them together to make the page that is index.html.
make # Runs the default make command.
make blurb # Creates the blurb.
make page_index # Creates the directory tree in HTML.
make generate_html # Default, creates index.html with CSS and JS.
make docs # Creates HTML of this page Netlify is watching for pushes to the main branch of the repository. If there is a push, Netlify will run the make command to publish the directory, serving index.html statically.
blurb.md: Markdown file containing the blurb. generate_html.py: Python script for generating HTML from products.csv. products.csv: CSV file containing product information.