In order to build the website locally, you'll need Node.js >= 14.16 (or basically the latest LTS version).
The setup is straight forward:
# Install dependencies
yarn install
# Serve locally (by default on port 8080)
yarn dev
To add a YouTube video with a preview, you can so so by linking to it like this:
[![IMAGE ALT TEXT HERE](https://img.youtube.com/vi/YOUTUBE_VIDEO_ID_HERE/mqdefault.jpg)](https://www.youtube.com/watch?v=YOUTUBE_VIDEO_ID_HERE)
Note that the link item need to be a preview image (either from YouTube or a custom one) to result in an embedded video.