ci: test buildkitd build for macos

Signed-off-by: CrazyMax <[email protected]>

.github/workflows/test-os.yml

@@ -237,3 +237,27 @@ jobs:
         name: Dump context
         if: failure()
         uses: crazy-max/ghaction-dump-context@v2
+
+  test-darwin-amd64:
+    runs-on: ubuntu-24.04
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ env.SETUP_BUILDX_VERSION }}
+          driver-opts: image=${{ env.SETUP_BUILDKIT_IMAGE }}
+          buildkitd-flags: --debug
+      -
+        name: Build
+        uses: docker/bake-action@v5
+        with:
+          provenance: false
+          targets: binaries
+          set: |
+            *.target=buildkitd
+            *.platform=darwin/amd64
+            *.output=type=cacheonly