Add GitHub Actions CI/CD use case to home page examples

Author: beran-t

docs.mdx

@@ -57,4 +57,7 @@ The documentation is split into three main sections:
   <Card title="Computer Use" icon="desktop" href="/docs/use-cases/computer-use">
     Build AI agents that see, understand, and control virtual Linux desktops using E2B Desktop sandboxes.
   </Card>
+  <Card title="GitHub Actions CI/CD" icon="gears" href="/docs/use-cases/ci-cd">
+    Run AI-powered code review, testing, and validation in secure E2B sandboxes from your GitHub Actions workflows.
+  </Card>
 </CardGroup>