ci: replace metadata-action with reusable auto-tag action

.github/actions/auto-tag/action.yml

@@ -0,0 +1,37 @@
+name: "Cloud-Neutral Auto Tag"
+description: "Generate Docker tags for main, release, PR and dev branches"
+inputs:
+  image:
+    description: "Base image name (e.g. ghcr.io/.../image)"
+    required: true
+
+outputs:
+  tags:
+    description: "Generated Docker tags"
+    value: ${{ steps.meta.outputs.tags }}
+  labels:
+    description: "Generated Docker labels"
+    value: ${{ steps.meta.outputs.labels }}
+
+runs:
+  using: composite
+  steps:
+    - name: Generate metadata (auto tags)
+      id: meta
+      uses: docker/metadata-action@v5
+      with:
+        images: ${{ inputs.image }}
+
+        tags: |
+          # main → latest
+          type=raw,enable=${{ github.ref == 'refs/heads/main' }},value=latest
+
+          # release tag（v1.2.3）
+          type=ref,event=tag
+          type=semver,pattern={{version}}
+
+          # PR → pr-123
+          type=raw,enable=${{ startsWith(github.ref, 'refs/pull/') }},value=pr-${{ github.event.pull_request.number }}
+
+          # dev/feature branches → branch name
+          type=ref,event=branch

.github/workflows/build-base-images.yml

@@ -47,13 +47,20 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - uses: docker/metadata-action@v5
+      #- uses: docker/metadata-action@v5
+      #  id: meta
+      #  with:
+      #    images: ${{ env.REGISTRY }}/${{ env.ORG }}/${{ matrix.image.name }}
+      #    tags: |
+      #      type=sha
+      #      type=raw,value=latest
+
+      - name: Generate Auto Tags
         id: meta
+        uses: ./.github/actions/auto-tag
         with:
-          images: ${{ env.REGISTRY }}/${{ env.ORG }}/${{ matrix.image.name }}
-          tags: |
-            type=sha
-            type=raw,value=latest
+          image: ${{ env.REGISTRY }}/${{ env.ORG }}/${{ matrix.image.name }}
+
 
       - uses: docker/setup-qemu-action@v3