[Hardware][AMD][CI/Build][Doc] Upgrade to ROCm 6.1, Dockerfile improvements, test fixes (#5422)

tests/entrypoints/test_openai_server.py

@@ -16,7 +16,7 @@ from openai import BadRequestError
 
 from vllm.transformers_utils.tokenizer import get_tokenizer
 
-from ..utils import VLLM_PATH, RemoteOpenAIServer
+from ..utils import RemoteOpenAIServer
 
 # any model with a chat template should work here
 MODEL_NAME = "HuggingFaceH4/zephyr-7b-beta"
@@ -81,7 +81,7 @@ def zephyr_lora_files():
 
 @pytest.fixture(scope="module")
 def ray_ctx():
-    ray.init(runtime_env={"working_dir": VLLM_PATH})
+    ray.init()
     yield
     ray.shutdown()