[CI][v0.18.0] Build nightly image for releases/v0.18.0 per pr (#7662)

### What this PR does / why we need it?
This patch add per pr image build for branch `releases/v0.18.0`, Due to
the limitations of the quay naming convention, we should not name the
image tag the same as branch name, we name the image
tag`releases-v0.18.0` for daily build.

Signed-off-by: hfadzxy <starmoon_zhang@163.com>

.github/workflows/_schedule_image_build.yaml

@@ -47,6 +47,7 @@ jobs:
       with:
         fetch-depth: 0
         persist-credentials: false
+        ref: ${{ github.ref }}
 
     - uses: actions/checkout@v6
       if: ${{ github.event_name == 'workflow_dispatch' }}
@@ -113,6 +114,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v6
+        with:
+          ref: ${{ github.ref }}
 
       - name: Download arm64 digests
         uses: actions/download-artifact@v8
@@ -154,9 +157,9 @@ jobs:
           #      which follow the rule from vLLM with prefix v
           # TODO(yikun): the post release might be considered as latest release
           tags: |
+            type=ref,event=branch,suffix=${{ env.SUFFIX }}
+            type=ref,event=pr,suffix=${{ env.SUFFIX }}
             type=pep440,pattern={{raw}},suffix=${{ env.SUFFIX }}
-            type=schedule,pattern=main,suffix=${{ env.SUFFIX }}
-            type=raw,value=${{ inputs.workflow_dispatch_tag }},enable=${{ github.event_name == 'workflow_dispatch' }},suffix=${{ env.SUFFIX }}
           flavor:
             latest=false
 

.github/workflows/schedule_image_build_and_push.yaml

@@ -11,15 +11,35 @@
 #   - Publish when tag with v* (pep440 version)  ===>  vllm-ascend:v1.2.3 / vllm-ascend:v1.2.3rc1
 name: Image Build and Push
 on:
-  schedule:
-    # UTC+8: 8am, 12pm, 16pm, 21pm
-    - cron: '0 0,4,8,13 * * *'
   push:
+    # Publish image when tagging, the Dockerfile in tag will be build as tag image
+    branches:
+      - 'releases/*'
     tags:
       - 'v*'
-  pull_request: 
+    paths:
+      - '.github/workflows/schedule_image_build_and_push.yaml'
+      - 'Dockerfile*'
+      - 'vllm_ascend/**'
+      - 'setup.py'
+      - 'pyproject.toml'
+      - 'requirements.txt'
+      - 'cmake/**'
+      - 'CMakeLists.txt'
+      - 'csrc/**'
+  pull_request:
     branches:
-      - 'main'
+      - 'releases/*'
+    paths:
+      - '.github/workflows/schedule_image_build_and_push.yaml'
+      - 'Dockerfile*'
+      - 'vllm_ascend/**'
+      - 'setup.py'
+      - 'pyproject.toml'
+      - 'requirements.txt'
+      - 'cmake/**'
+      - 'CMakeLists.txt'
+      - 'csrc/**'
     types: [ labeled, synchronize ]
   workflow_dispatch:
     inputs:
@@ -36,10 +56,14 @@ on:
           - v0.14.0rc1
           - v0.13.0rc3
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   image_build:
     name: Image Build and Push
-    if: ${{ github.event_name != 'pull_request' || contains(github.event.pull_request.labels.*.name, 'image-build')  }}
+    if: ${{ github.event_name == 'push' || contains(github.event.pull_request.labels.*.name, 'image-build') }}
     strategy:
       matrix:
         build_meta:
@@ -66,7 +90,7 @@ jobs:
       dockerfile: ${{ matrix.build_meta.dockerfile }}
       suffix: ${{ matrix.build_meta.suffix }}
       quay_username: ${{ vars.QUAY_USERNAME }}
-      should_push: ${{ github.repository_owner == 'vllm-project' && (github.event_name != 'pull_request') }}
+      should_push: ${{ github.repository_owner == 'vllm-project' && github.event_name == 'push'}}
       workflow_dispatch_tag: ${{ inputs.tag }}
     secrets:
       QUAY_PASSWORD: ${{ secrets.QUAY_PASSWORD }}