feat: Add Docker support and health endpoint

- Add production-ready Dockerfile with multi-stage build
- Add .dockerignore for optimized builds
- Add docker-compose.yml for easy deployment
- Add /health endpoint for container health checks
- Update README with comprehensive Docker documentation
- Include security best practices (non-root user, health checks)
- Support for both development and production deployments

docker-compose.yml

@@ -0,0 +1,18 @@
+version: '3.8'
+
+services:
+  stargirlnails:
+    build: .
+    ports:
+      - "3000:3000"
+    env_file:
+      - .env
+    restart: unless-stopped
+    healthcheck:
+      test: ["CMD", "wget", "--no-verbose", "--tries=1", "--spider", "http://localhost:3000/"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
+      start_period: 40s
+    environment:
+      - NODE_ENV=production