ci: distribute multi-platform bin-image build

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

Author: crazy-max

.github/workflows/build.yml

@@ -31,7 +31,6 @@ env:
   SETUP_BUILDX_VERSION: "edge"
   SETUP_BUILDKIT_IMAGE: "moby/buildkit:latest"
   SCOUT_VERSION: "1.11.0"
-  REPO_SLUG: "docker/buildx-bin"
   DESTDIR: "./bin"
   TEST_CACHE_SCOPE: "test"
   TESTFLAGS: "-v --parallel=6 --timeout=30m"
@@ -405,63 +404,24 @@ jobs:
           if-no-files-found: error
 
   bin-image:
-    runs-on: ubuntu-24.04
+    uses: crazy-max/.github/.github/workflows/bake-distribute-mp.yml@0acc187b016a2946786f201397bbcfb2c530ffc7
     needs:
       - test-integration
       - test-unit
-    if: ${{ github.event_name != 'pull_request' && github.repository == 'docker/buildx' }}
-    steps:
-      -
-        name: Free disk space
-        uses: jlumbroso/free-disk-space@54081f138730dfa15788a46383842cd2f914a1be # v1.3.1
-        with:
-          android: true
-          dotnet: true
-          haskell: true
-          large-packages: true
-          swap-storage: true
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-      -
-        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: Docker meta
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: |
-            ${{ env.REPO_SLUG }}
-          tags: |
-            type=ref,event=branch
-            type=ref,event=pr
-            type=semver,pattern={{version}}
-          bake-target: meta-helper
-      -
-        name: Login to DockerHub
-        if: github.event_name != 'pull_request'
-        uses: docker/login-action@v3
-        with:
-          username: ${{ vars.DOCKERPUBLICBOT_USERNAME }}
-          password: ${{ secrets.DOCKERPUBLICBOT_WRITE_PAT }}
-      -
-        name: Build and push image
-        uses: docker/bake-action@v6
-        with:
-          files: |
-            ./docker-bake.hcl
-            cwd://${{ steps.meta.outputs.bake-file }}
-          targets: image-cross
-          push: ${{ github.event_name != 'pull_request' }}
-          sbom: true
-          set: |
-            *.cache-from=type=gha,scope=bin-image
-            *.cache-to=type=gha,scope=bin-image,mode=max
+    with:
+      target: image-cross
+      push: ${{ github.event_name != 'pull_request' && github.repository == 'docker/buildx' }}
+      cache: true
+      cache-scope: bin-image
+      meta-image: docker/buildx-bin
+      meta-tags: |
+        type=ref,event=branch
+        type=ref,event=pr
+        type=semver,pattern={{version}}
+      meta-bake-target: meta-helper
+      login-username: ${{ vars.DOCKERPUBLICBOT_USERNAME }}
+    secrets:
+      login-password: ${{ secrets.DOCKERPUBLICBOT_WRITE_PAT }}
 
   scout:
     runs-on: ubuntu-24.04
@@ -487,7 +447,7 @@ jobs:
         with:
           version: ${{ env.SCOUT_VERSION }}
           format: sarif
-          image: registry://${{ env.REPO_SLUG }}:master
+          image: registry://docker/buildx-bin:master
       -
         name: Upload SARIF report
         uses: github/codeql-action/upload-sarif@v3