[CI][Misc] Some improvement for github action (#6587)

### What this PR does / why we need it?

- This PR removes several self-hosted runner labels from the
`actionlint.yaml` configuration file. These runners are likely no longer
in use, so this change cleans up the configuration and ensures
`actionlint` has an accurate list of available runners.
- Move all Action dockerfiles to one folder
- remove useless `runner` input for e2e test.
- update workflow option version

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

No.

### How was this patch tested?

This is a configuration change for the CI linter. The correctness will
be verified by `actionlint` running in CI on subsequent pull requests.

- vLLM version: v0.15.0
- vLLM main:
d7e17aaacd

Signed-off-by: wangxiyuan <wangxiyuan1007@gmail.com>

.github/workflows/dockerfiles/Dockerfile.nightly.a2

@@ -0,0 +1,43 @@
+#
+# Copyright (c) 2025 Huawei Technologies Co., Ltd. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+# This file is a part of the vllm-ascend project.
+#
+
+FROM quay.io/ascend/vllm-ascend:main
+
+ARG PIP_INDEX_URL="https://mirrors.tuna.tsinghua.edu.cn/pypi/web/simple"
+ARG AIS_BENCH_TAG="v3.0-20250930-master"
+ARG AIS_BENCH_URL="https://gitee.com/aisbench/benchmark.git"
+
+# Define environments
+ENV DEBIAN_FRONTEND=noninteractive
+
+WORKDIR /workspace
+
+RUN pip config set global.index-url ${PIP_INDEX_URL}
+
+# Install requirements-dev.txt for tests
+RUN export PIP_EXTRA_INDEX_URL=https://mirrors.huaweicloud.com/ascend/repos/pypi && \
+    cd /vllm-workspace/vllm-ascend && \
+    python3 -m pip install -r requirements-dev.txt && \
+    python3 -m pip cache purge
+
+# Install benchmark tools
+RUN git clone -b ${AIS_BENCH_TAG} --depth 1 ${AIS_BENCH_URL} /vllm-workspace/vllm-ascend/benchmark && \
+    cd /vllm-workspace/vllm-ascend/benchmark && \
+    pip install -e . -r requirements/api.txt -r requirements/extra.txt && \
+    python3 -m pip cache purge
+
+CMD ["/bin/bash"]