Use normalized working directory

Author: kryanbeane

src/codeflare_sdk/ray/rayjobs/rayjob.py

@@ -527,7 +527,10 @@ def _validate_working_dir_entrypoint(self):
 
             # Check file exists within working_dir
             if not normalized_entrypoint.startswith(normalized_working_dir + os.sep):
-                full_entrypoint_path = os.path.join(working_dir, entrypoint_path)
+                # Use normalized_working_dir (absolute path) for proper file existence check
+                full_entrypoint_path = os.path.join(
+                    normalized_working_dir, entrypoint_path
+                )
                 if not os.path.isfile(full_entrypoint_path):
                     raise ValueError(
                         f"❌ Entrypoint file not found:\n"

tests/e2e/rayjob/rayjob_existing_cluster_test.py

@@ -56,7 +56,7 @@ def test_existing_kueue_cluster(self):
                 worker_cpu_limits=resources["worker_cpu_limits"],
                 worker_memory_requests=resources["worker_memory_requests"],
                 worker_memory_limits=resources["worker_memory_limits"],
-                image=get_ray_image(),
+                image=constants.CUDA_PY312_RUNTIME_IMAGE,
                 local_queue=self.local_queues[0],
                 write_to_file=True,
                 verify_tls=False,