fix: add debug option for SSH remote shell wrapper to assist with troubleshooting

.github/workflows/example.yml

@@ -19,6 +19,10 @@ jobs:
           ssh-private-key: ${{ secrets.SSH_PRIVATE_KEY }}
           ssh-host: ${{ secrets.SSH_HOST }}
           ssh-user: ${{ secrets.SSH_USER }}
+          # Try turning on the shell wrapper debug if the job succeeds but
+          # produces no visible output. This will print the temp script and
+          # its contents to the step log.
+          debug-shell-wrapper: 'true'
       
       - name: Check system info
         shell: ssh-remote {0}