docs: Add gcp preevy video to docs (#208)

site/docs/drivers/gcp-gce.md

@@ -18,6 +18,10 @@ Google compute also offer $300 free credit for new users which is suited for try
 Preevy uses the Google SDK which uses application default credentials (https://cloud.google.com/docs/authentication/application-default-credentials).
 The simplest way is to use `gcloud auth application-default login` command.
 
+Also, you can check out the video below for a step-by-step guide on how to configure GCP credentials ans use them with Preevy.
+
+<p align="center"><iframe width="816" height="480" src="https://www.youtube.com/embed/T9x15amj_CY?si=PTiopbOCGo5N8xnD" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe></p>
+
 ### Required GCE permissions
 
 TBD