chore: Updated ssh_test.yml for deployment testing

.github/workflows/ssh_test.yml

@@ -23,6 +23,7 @@ jobs:
           script: |
             echo "hello world"
             echo "hello world2"
+            docker run hello-world
 
 # 깃허브 레파지토리가 프라이빗으로 만들어져 있을때. 
 # git pull https://${{ secrets.GIT_USER }}:${{ secrets.GIT_PASSWORD }}@github.com/blockenters/streamlit_kmeans.git