fix(ci): use inline tag suffixes for docker/metadata-action

The top-level 'suffix' key is not supported by docker/metadata-action@v6.
Move arch suffix into inline tag definitions (suffix=-)... to match the
dataplane and dashboard patterns that work correctly.

Author: mahmut-Abi

.github/workflows/docker.yml

@@ -33,9 +33,8 @@ jobs:
         with:
           images: ghcr.io/${{ github.repository_owner }}/nantian-controlplane
           tags: |
-            type=sha,prefix=sha-,format=short
-            type=raw,value=latest,enable=${{ github.ref == 'refs/heads/main' }}
-          suffix: -${{ matrix.arch }}
+            type=sha,prefix=sha-,format=short,suffix=-${{ matrix.arch }}
+            type=raw,value=latest-${{ matrix.arch }},enable=${{ github.ref == 'refs/heads/main' }}
 
       - name: Login to GHCR
         if: github.ref == 'refs/heads/main'