Doc: Workflow badge 추가

README.md

@@ -3,7 +3,8 @@
 ![java](https://img.shields.io/badge/java-007396?style=for-the-badge&logo=JAVA&logoColor=white)
 ![Spring_boot](https://img.shields.io/badge/Spring_Boot-F2F4F9?style=for-the-badge&logo=spring-boot)
 ![maven](https://img.shields.io/badge/Maven-C71A36?style=for-the-badge&logo=apache-maven&logoColor=white)
-![swagger](https://img.shields.io/badge/swagger-85EA2D?style=for-the-badge&logo=swagger&logoColor=black)
+![swagger](https://img.shields.io/badge/swagger-85EA2D?style=for-the-badge&logo=swagger&logoColor=black)  
+![workflow](https://github.com/eGovFramework/egovframe-template-simple-backend/actions/workflows/maven.yml/badge.svg)
 
 ※ 본 프로젝트는 기존 JSP 뷰 방식에서 벗어나 BackEnd와 FrontEnd를 분리하기 위한 예시 파일로 참고만 하시길 바랍니다.