[CI] Add daily images build for nightly ci (#3989)

### What this PR does / why we need it?
Given the current excessively long build time of our nightly-ci, I
recommend installing necessary, confirmed versions of packages in the
Docker image to reduce the time required for integration testing.
Including Mooncake vllm with fixed tags, This is expected to reduce
nightly-ci duration by 2 hours.

- vLLM version: v0.11.0
- vLLM main:
2918c1b49c

---------

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

.github/workflows/vllm_ascend_test_nightly_a3.yaml

@@ -41,9 +41,18 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
+  image_build:
+    name: nightly image build
+    uses: ./.github/workflows/_nightly_image_build.yaml
+    with:
+      target: a3
+    secrets:
+      HW_USERNAME: ${{ secrets.HW_USERNAME }}
+      HW_TOKEN: ${{ secrets.HW_TOKEN }}
   single-node-tests:
     name: single-node
-    if: github.event_name == 'schedule' || github.event_name == 'workflow_dispatch'
+    if: always() && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch')
+    needs: image_build
     strategy:
       fail-fast: false
       matrix:
@@ -94,13 +103,13 @@ jobs:
     with:
       vllm: v0.11.0
       runner: ${{ matrix.test_config.os }}
-      image: swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/cann:8.3.rc1-a3-ubuntu22.04-py3.11
+      image: ${{ fromJSON(format('"{0}"', needs.image_build.outputs.image-tag || 'swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/vllm-ascend:nightly-a3')) }}
       tests: ${{ matrix.test_config.tests }}
       name: ${{ matrix.test_config.name }}
 
   multi-node-tests:
     name: multi-node
-    needs: single-node-tests
+    needs: [single-node-tests, image_build]
     if: always() && (github.event_name == 'schedule' || github.event_name == 'workflow_dispatch')
     strategy:
       fail-fast: false
@@ -129,7 +138,7 @@ jobs:
     with:
       soc_version: a3
       runner: linux-aarch64-a3-0
-      image: m.daocloud.io/quay.io/ascend/cann:8.3.rc1-a3-ubuntu22.04-py3.11
+      image: ${{ fromJSON(format('"{0}"', needs.image_build.outputs.image-tag || 'swr.cn-southwest-2.myhuaweicloud.com/base_image/ascend-ci/vllm-ascend:nightly-a3')) }}
       replicas: 1
       size: ${{ matrix.test_config.size }}
       config_file_path: ${{ matrix.test_config.config_file_path }}