Modernize Docker Compose configuration

- Replace docker-compose.yml with compose.yaml (modern standard)
- Remove obsolete 'version' field (deprecated in Docker Compose)
- Remove development service configuration
- Add proper image tagging with skoszewski/jmespath-playground
- Keep build context for local development flexibility
- Simplify to production-only service configuration

compose.yaml

@@ -0,0 +1,9 @@
+services:
+  jmespath-playground:
+    build: .
+    image: skoszewski/jmespath-playground
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+    restart: unless-stopped