{docs} docker image 버전 추가

Author: JayongLee

.github/workflows/docker-image-ec2.yml

@@ -57,6 +57,7 @@ jobs:
         run: |
           VERSION=0.${{ github.run_number }}
           docker push ${{ secrets.DOCKERHUB_USERNAME }}/weakness_server:$VERSION
+          docker push ${{ secrets.DOCKERHUB_USERNAME }}/weakness_server:latest          
 
       # 8. EC2에 SSH 연결 및 새 이미지 실행
       - name: Deploy to EC2