[BUG] Fix nightly container testing, currently the failure is not getting highlighted

[rgsl888prabhu]

Describe the bug
Fix nightly container testing, currently the failure is not getting highlighted

https://github.com/NVIDIA/cuopt/blob/branch-25.10/ci/docker/test_image.sh

usa13509.tsp.gz
vm1084.tsp.gz
vm1748.tsp.gz
xray.problems.gz
/__w/cuopt/cuopt
/opt/cuopt/test.sh: line 2: pip: command not found
----------------- CLI TEST START ---------------
----------------- CLI TEST END ---------------
----------------- CUOPT TEST START ---------------
/usr/bin/python: No module named pytest
/usr/bin/python: No module named pytest
----------------- CUOPT TEST END ---------------
----------------- CUOPT SERVER TEST START ---------------
/usr/bin/python: No module named pytest
----------------- CUOPT SERVER TEST END ---------------