Test with help message

.github/workflows/nightly.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Upload artifacts
       uses: actions/upload-artifact@v3
       with:
-        path: /workspace/tliu93/home-automation-backend/src/home-automation-backend
+        path: ${GITHUB_WORKSPACE}/src/home-automation-backend
         name: home-automation-backend_build_${{ github.run_number }}
         retention-days: 1
 
@@ -36,9 +36,7 @@ jobs:
           name: home-automation-backend_build_${{ github.run_number }}
       - name: Print helping message
         run: |
-          echo ${GITHUB_WORKSPACE}
-          pwd
-          ls -lR
+          ${GITHUB_WORKSPACE}/home-automation-backend help
 
   nightly-tests:
     runs-on: [ubuntu-latest, cloud]