ci: use native arm64 runner and cache build layers

.github/workflows/docker-build.yml

@@ -1,4 +1,4 @@
-name: Docker build and push
+name: Docker
 
 on:
   pull_request:
@@ -15,7 +15,50 @@ env:
   IMAGE_NAME: ${{ github.repository }}
 
 jobs:
-  docker-build-and-push:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm64
+
+    permissions:
+      contents: read
+      packages: write
+      attestations: write
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to the Container registry
+        uses: docker/login-action@v3
+        with:
+          registry: ${{ env.REGISTRY }}
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build and cache Docker image
+        id: push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          platforms: ${{ matrix.platform }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+          push: false
+
+  push:
+    needs: build
     runs-on: ubuntu-latest
 
     permissions: