Add Docker image and compose for Needle web exports

Serve production Vite dist with nginx; optional SampleScene profile.

Made-with: Cursor

docker-compose.yml

@@ -0,0 +1,23 @@
+services:
+  # Default: Needle/MenuScene → http://localhost:8080
+  menu:
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        NEEDLE_APP: MenuScene
+    ports:
+      - "8080:80"
+    restart: unless-stopped
+
+  # Optional: docker compose --profile sample up --build
+  sample:
+    profiles: ["sample"]
+    build:
+      context: .
+      dockerfile: Dockerfile
+      args:
+        NEEDLE_APP: SampleScene
+    ports:
+      - "8081:80"
+    restart: unless-stopped