[CI] support build wheel and docker image by workflow (#6453)

Make image and wheel build CI job work with workflow_dispatch way

- vLLM version: v0.14.1
- vLLM main:
dc917cceb8

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

.github/workflows/_schedule_image_build.yaml

@@ -43,10 +43,18 @@ jobs:
             tag: arm64
     steps:
     - uses: actions/checkout@v6
+      if: ${{ github.event_name != 'workflow_dispatch' }}
       with:
         fetch-depth: 0
         persist-credentials: false
 
+    - uses: actions/checkout@v6
+      if: ${{ github.event_name == 'workflow_dispatch' }}
+      with:
+        fetch-depth: 0
+        persist-credentials: false
+        ref: ${{ inputs.workflow_dispatch_tag }}
+
     - name: Free up disk space
       uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # v1.3.1
       with:
@@ -148,6 +156,7 @@ jobs:
           tags: |
             type=pep440,pattern={{raw}},suffix=${{ 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