Use official actions

Author: edoardob90

.github/workflows/docker-build.yml

@@ -18,8 +18,8 @@ jobs:
     permissions:
       packages: write
     steps:
-      - name: Checkout repository
-        uses: actions/checkout@v4
+      - name: Setup Docker Buildx
+        uses: docker/setup-buildx-action@v3
 
       - name: Log in to GHCR
         uses: docker/login-action@v3
@@ -28,10 +28,9 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Build the Docker image
-        run: |
-          docker build -t ghcr.io/${{ github.repository }}:latest .
-
-      - name: Push the Docker image
-        run: |
-          docker push ghcr.io/${{ github.repository }}:latest
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          platforms: linux/amd64,linux/arm64
+          push: true
+          tags: ghcr.io/${{ github.repository }}:latest