Update Docker build for multi-arch support

- Add support for multiple architectures (linux/amd64, linux/arm64, linux/arm/v7)
- Enable Docker Buildx for cross-platform builds
- Update GitHub Actions workflow to support matrix builds
- Add Docker Scout for image size and recommendations

.github/workflows/pr_lint.yml

@@ -121,27 +121,16 @@ jobs:
       contents: read
       pull-requests: write
       packages: read
-
+    strategy:
+      matrix:
+        platform: [linux/amd64, linux/arm64, linux/arm/v7]
     steps:
       - name: Checkout repository
         uses: actions/checkout@v4
 
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v3
 
-      - name: Login to GitHub Container Registry
-        uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-#      - name: Login to Docker Hub
-#        uses: docker/login-action@v3
-#        with:
-#          username: ${{ secrets.DOCKERHUB_USERNAME }}
-#          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
       - name: Extract Docker metadata
         id: meta
         uses: docker/metadata-action@v5
@@ -155,11 +144,11 @@ jobs:
         uses: actions/cache@v4
         with:
           path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
+          key: ${{ runner.os }}-buildx-${{ matrix.platform }}-${{ github.sha }}
           restore-keys: |
-            ${{ runner.os }}-buildx-
+            ${{ runner.os }}-buildx-${{ matrix.platform }}-
 
-      - name: Build Docker image
+      - name: Build Docker image for ${{ matrix.platform }}
         uses: docker/build-push-action@v5
         id: build-and-push
         with:
@@ -169,16 +158,4 @@ jobs:
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=local,src=/tmp/.buildx-cache
           cache-to: type=local,dest=/tmp/.buildx-cache
-          platforms: linux/amd64,linux/arm64,linux/arm/v7
-
-      - name: Docker Scout
-        uses: docker/scout-action@v1
-        with:
-          command: quickview,recommendations,compare,environment
-          image: ${{ steps.meta.outputs.tags }}
-          to-latest: true
-          github-token: ${{ secrets.GITHUB_TOKEN }}
-          dockerhub-user: ${{ secrets.DOCKERHUB_USERNAME }}
-          dockerhub-password: ${{ secrets.DOCKERHUB_TOKEN }}
-          registry-user: ${{ github.actor }}
-          registry-password: ${{ secrets.GITHUB_TOKEN }}
+          platforms: ${{ matrix.platform }}