try the run command thing

.github/workflows/build_matlab.yml

@@ -28,11 +28,9 @@ jobs:
         cd build
         cmake ..
         cmake --build . --config Release --target install --parallel 4
-    - name: run mex example
-      run: |
-        pwd
-        ls -l
-        ls -l build
-        matlab -nodisplay -r 'try, example(), catch, exit(1); end; exit'
+    - name: Run example script
+        uses: matlab-actions/run-command@v1
+        with:
+          command: example