[Misc] Fix doctest (#7648)

### What this PR does / why we need it?
This patch fix the doc test
[failure](https://github.com/vllm-project/vllm-ascend/actions/runs/23501203166/job/68396531067):
1. Enforce the versions of torchaudio and torchvision to match the
version of torch_npu(refer
https://github.com/pytorch/pytorch/wiki/PyTorch-Versions)
2. Some convenience fixes to prevent network fluctuations from causing
test failures(eg: offline mode for ms)

### Does this PR introduce _any_ user-facing change?

### How was this patch tested?

- vLLM version: v0.18.0
- vLLM main:
vllm-project/vllm@35141a7

---------

Signed-off-by: wangli <wangli858794774@gmail.com>

Author: Potabk

requirements.txt

@@ -14,8 +14,8 @@ psutil
 setuptools>=64
 setuptools-scm>=8
 torch==2.9.0
-torchvision
-torchaudio
+torchvision==0.24.0
+torchaudio==2.9.0
 wheel
 xgrammar>=0.1.30
 pandas-stubs

tests/e2e/doctests/002-pip-binary-installation-test.sh

@@ -36,21 +36,24 @@ function config_pip_mirror() {
 function install_binary_test() {
 
     install_system_packages
-    config_pip_mirror
     create_vllm_venv
+    config_pip_mirror
 
     PIP_VLLM_VERSION=$(get_version pip_vllm_version)
     VLLM_VERSION=$(get_version vllm_version)
     PIP_VLLM_ASCEND_VERSION=$(get_version pip_vllm_ascend_version)
     _info "====> Install vllm==${PIP_VLLM_VERSION} and vllm-ascend ${PIP_VLLM_ASCEND_VERSION}"
 
     # Setup extra-index-url for x86 & torch_npu dev version
-    pip config set global.extra-index-url "https://download.pytorch.org/whl/cpu/ https://mirrors.huaweicloud.com/ascend/repos/pypi"
+    pip config set global.extra-index-url "https://download.pytorch.org/whl/cpu/"
 
     # The vLLM version already in pypi, we install from pypi.
     pip install vllm=="${PIP_VLLM_VERSION}"
 
     pip install vllm-ascend=="${PIP_VLLM_ASCEND_VERSION}"
+    if [ "${PIP_VLLM_ASCEND_VERSION}" == "0.17.0rc1" ]; then
+        pip install torchvision==0.24.0 torchaudio==2.9.0
+    fi
 
     pip list | grep vllm
 

tests/e2e/run_doctests.sh

@@ -23,6 +23,7 @@ set -eo errexit
 
 export VLLM_USE_MODELSCOPE=true
 export MODELSCOPE_HUB_FILE_LOCK=false
+export HF_HUB_OFFLINE=1
 
 _info "====> Start Quickstart test"
 . "${SCRIPT_DIR}/doctests/001-quickstart-test.sh"