build arm first

.github/workflows/docker-publish.yml

@@ -84,32 +84,6 @@ jobs:
           cache-to: type=gha,mode=max
           target: test
 
-      # Build and push Docker image with Buildx (don't push on PR)
-      # https://github.com/docker/build-push-action
-      - name: Build and push Docker image for x64
-        id: build-and-push-x64
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          pull: true
-          push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/amd64
-          cache-from: type=gha,scope=buildkit-x64
-          cache-to: type=gha,mode=max,scope=buildkit-x64
-          build-args: GITHUB_BUILD=true,VERSION=${{ github.ref_name }}
-
-      - name: Sign the published Docker image
-        if: ${{ github.event_name != 'pull_request' }}
-        env:
-          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
-          TAGS: ${{ steps.meta.outputs.tags }}
-          DIGEST: ${{ steps.build-and-push-x64.outputs.digest }}
-        # This step uses the identity token to provision an ephemeral certificate
-        # against the sigstore community Fulcio instance.
-        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
-
       - name: Build and push Docker image for arm64
         id: build-and-push-arm64
         uses: docker/build-push-action@v6
@@ -129,7 +103,7 @@ jobs:
       # repository is public to avoid leaking data.  If you would like to publish
       # transparency data even for private images, pass --force to cosign below.
       # https://github.com/sigstore/cosign
-      - name: Sign the published Docker image
+      - name: Sign the published Docker image for arm64
         if: ${{ github.event_name != 'pull_request' }}
         env:
           # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
@@ -138,3 +112,29 @@ jobs:
         # This step uses the identity token to provision an ephemeral certificate
         # against the sigstore community Fulcio instance.
         run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}
+
+      # Build and push Docker image with Buildx (don't push on PR)
+      # https://github.com/docker/build-push-action
+      - name: Build and push Docker image for x64
+        id: build-and-push-x64
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          pull: true
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          platforms: linux/amd64
+          cache-from: type=gha,scope=buildkit-x64
+          cache-to: type=gha,mode=max,scope=buildkit-x64
+          build-args: GITHUB_BUILD=true,VERSION=${{ github.ref_name }}
+
+      - name: Sign the published Docker image for x64
+        if: ${{ github.event_name != 'pull_request' }}
+        env:
+          # https://docs.github.com/en/actions/security-guides/security-hardening-for-github-actions#using-an-intermediate-environment-variable
+          TAGS: ${{ steps.meta.outputs.tags }}
+          DIGEST: ${{ steps.build-and-push-x64.outputs.digest }}
+        # This step uses the identity token to provision an ephemeral certificate
+        # against the sigstore community Fulcio instance.
+        run: echo "${TAGS}" | xargs -I {} cosign sign --yes {}@${DIGEST}