feat(template): added excalidraw (#6095)

Co-authored-by: Andras Bacsai <5845193+andrasbacsai@users.noreply.github.com>

templates/compose/excalidraw.yaml

@@ -0,0 +1,21 @@
+# documentation: https://docs.excalidraw.com/docs
+# slogan: Virtual whiteboard for sketching hand-drawn like diagrams 
+# tags: canvas,diagrams,drawing,productivity,whiteboard
+# logo: svgs/excalidraw.svg
+# port: 80
+
+services:
+  excalidraw:
+    image: excalidraw/excalidraw:latest
+    environment:
+      - SERVICE_FQDN_EXCALIDRAW_80
+    healthcheck:
+      test:
+        - CMD
+        - wget
+        - '--spider'
+        - '--quiet'
+        - 'http://localhost'
+      interval: 30s
+      timeout: 5s
+      retries: 3