Download button for tutorials

[TuanaCelik]

Tutorials have the following in the frontmatter:

---
layout: tutorial
colab: https://colab.research.google.com/github/deepset-ai/haystack-tutorials/blob/main/tutorials/01_Basic_QA_Pipeline.ipynb
toc: True
title: "Build Your First QA System"
last_updated: 2022-10-12
level: "beginner"
weight: 10
description: Get Started by creating a Retriever Reader pipeline.
category: "QA"
aliases: ['/tutorials/first-qa-system']
---

We would like to also have a 'download' button at the top too.

@masci - is it worth asking contributors to provide a download field in haystack-tutorials index.toml ? - I would imagine everything should be 'downloadable'? In which case we could just re-use the colab field URL to download the file?

[carlosgauci]

It was added already, you just need to add the download key to the frontmatter, like the colab link.

[TuanaCelik]

Hey @carlosgauci - Yes indeed, but from what I remember there was still some functionality to add no? When I click that button I got a json file in the browser. It didn't download the .ipynb file. Or am I doing something wrong?

[carlosgauci]

@TuanaCelik You're right I opened a PR: #49 to force downloads on the button. The files to be downloaded should be in the static directory though so I don't think you can re-use the same colab URL unless they provide a direct download link.

[TuanaCelik]

Ah ok, so the .ipynb files won't be in the haystack-home repo. They're in haystack-tutoials. Any way we could have them downloaded from the git url to the file?

[carlosgauci]

I think the best way would be to modify the build script that @masci added, to also copy over the .ipynb files into static/downloads, then you can serve the downloads from there easily.

[TuanaCelik]

Sounds good, wdyt @masci ?

[masci]

Ok to include the notebooks in the Hugo build without checking them into the repo 👍