chore: 改为只构建arm64架构，与公司repo保持一致

- 移除multiarch构建配置
- 硬编码platforms为linux/arm64
- 标签改为v001arm
- Dockerfile保持原始状态

Author: Zhang-Hanliang

.github/workflows/build-ccu-vehicle-mock-single.yml

@@ -101,6 +101,6 @@ jobs:
         with:
           context: ./vehicle-mock
           file: ./vehicle-mock/Dockerfile
-          tags: ghcr.io/${{ steps.github-repository-name-case-adjusted.outputs.lowercase }}/vehicle-mock:${{ inputs.platform }}
+          tags: ghcr.io/${{ steps.github-repository-name-case-adjusted.outputs.lowercase }}/vehicle-mock:v001arm
           push: true
-          platforms: ${{ steps.set_args.outputs.platforms }}
+          platforms: "linux/arm64"

.github/workflows/build-ccu-vehicle-mock.yml

@@ -47,9 +47,9 @@ jobs:
           NAME="vehicle-mock"
           echo "app_name=$NAME" >> $GITHUB_OUTPUT
 
-  build-image-multiarch:
+  build-image-arm64:
     uses: ./.github/workflows/build-ccu-vehicle-mock-single.yml
     needs: [get-app-name]
     with:
-      platform: multiarch
+      platform: arm64
       app_name: ${{ needs.get-app-name.outputs.app_name }}