feat: add healthcheck to Dockerfile

Dockerfile

@@ -32,5 +32,9 @@ RUN mkdir -p docs
 # Expose port
 EXPOSE 3333
 
+# Health check
+HEALTHCHECK --interval=30s --timeout=10s --start-period=40s --retries=3 \
+  CMD wget --no-verbose --tries=1 --spider http://localhost:3333/api/health || exit 1
+
 # Default command: run the server (not interactive CLI)
 CMD ["npm", "run", "server"]