docs: add video for local deployment

pages/self-hosting/local.mdx

@@ -13,6 +13,21 @@ This is the simplest way to run Langfuse to give it a try.
 For high-availability and high-throughput, we recommend using Kubernetes ([deployment guide](/self-hosting/kubernetes-helm)).
 The docker compose setup lacks high-availability, scaling capabilities, and backup functionality.
 
+## Walkthrough
+
+Watch this 2:15 minute walkthrough for a step-by-step guide on running Langfuse locally with Docker Compose.
+
+<iframe
+  width="100%"
+  className="aspect-[15.94/9] rounded-lg border mt-6 w-full"
+  src="https://www.youtube.com/embed/we52x5-a_Ac?si=2rqAs0LNwqeq767W"
+  title="YouTube video player"
+  frameborder="0"
+  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
+  referrerpolicy="strict-origin-when-cross-origin"
+  allowFullScreen
+></iframe>
+
 ## Get Started
 
 Requirements: