use multiple runners for the multi-arch build

.gitea/workflows/ci.yml

@@ -65,6 +65,7 @@ jobs:
     name: Build and push image
     runs-on: ${{ matrix.arch.runner }}
     strategy:
+      fail-fast: false
       matrix:
         arch:
           - runner: ubuntu-latest
@@ -97,12 +98,11 @@ jobs:
         id: build
         uses: docker/build-push-action@v6
         with:
-          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           labels: ${{ steps.meta.outputs.labels }}
           annotations: ${{ steps.meta.outputs.annotations }}
           target: prod
           platforms: ${{ matrix.arch.platform }}
-          outputs: type=image,push-by-digest=true,name-canonical=true,push=true
+          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,push=true
       - name: Export digest
         run: |
           mkdir -p ${{ runner.temp }}/digests
@@ -142,7 +142,6 @@ jobs:
           images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
           tags: |
             type=ref,event=branch
-            type=ref,event=pr
             type=sha
       - name: Create manifest list and push
         working-directory: ${{ runner.temp }}/digests