Improve readme

README.md

@@ -1,15 +1,28 @@
-# Using Workload Identity Federation in GitHub Actions
+[![Cover Slide](cover-slide.png)](https://workload-identity-federation-demo-website.storage.googleapis.com/index.html))
+
+[![GitHub branch check runs](https://img.shields.io/github/check-runs/AdrianoKF/workload-identity-federation-demo/main?label=CI)](https://github.com/AdrianoKF/workload-identity-federation-demo/actions) [![Current slide deck](https://img.shields.io/badge/slides-current-blue)](https://workload-identity-federation-demo-website.storage.googleapis.com/index.html)
 
 You can find the latest version of the slide deck here:
 
-https://workload-identity-federation-demo-website.storage.googleapis.com/index.html
+**https://workload-identity-federation-demo-website.storage.googleapis.com/index.html**
+
+## Deployment
+
+This repository doubles as the demonstration of the concepts in the talk.
+
+It contains a [GitHub Actions workflow `.github/workflows/deploy.yml`](.github/workflows/deploy.yml) that builds the slide deck SPA using <img src="https://sli.dev/logo.svg" width="24" style="vertical-align: middle"> [Slidev](https://sli.dev/) (go check it out!) and deploys it to a public Google Cloud Storage bucket.
+
+Authentication between the GitHub Actions runner and Google Cloud is set up using
+[Direct Workload Identity Federation](https://github.com/google-github-actions/auth?tab=readme-ov-file#direct-wif).
+
+Yes, deploying the generated page to GitHub Pages would have been simpler, but then I would have to cook up another artificial example for the demo 😉.
 
-## Running Locally
+## Working on the slides
 
 To start the slide show in dev mode:
 
 - `npm install`
 - `npm run dev`
 - visit http://localhost:3030
 
-Edit and save [slides.md](./slides.md) to see the changes.
+Edit and save [`slides.md`](./slides.md) to see the changes.