This has a basic config to use the new Codespaces feature in GitHub.
If you have access to the feature all you need to do is:
1. Visit https://github.com/discourse/discourse
2. Click on Code > Open with Codespaces > New codespace
3. Wait it to prepare the environment
4. Click on File > Run > Run without Debug or press
<kbd>CTRL</kbd>+<kbd>F5</kbd>
5. When prompted click on the green pop-up on the lower left to open the
running Discourse app in a new tab
