update bad userpace docker test

Author: mr-c

tests/test_examples.py

@@ -954,7 +954,7 @@ def test_bad_userspace_runtime(factor):
         "--user-space-docker-cmd=quaquioN", "--default-container=debian",
         get_data(test_file), get_data(job_file)])
     error_code, stdout, stderr = get_main_output(commands)
-    assert "'quaquioN' not found:" in stderr, stderr
+    assert "'quaquioN' not found:" in stderr or "No such file or directory: 'quaquioN'" in stderr, stderr
     assert error_code == 1
 
 @windows_needs_docker