enhance build (#71)

Author: luiarthur

.github/workflows/docker.yml

@@ -48,3 +48,14 @@ jobs:
         with:
           images: ghcr.io/${{ github.repository_owner }}/ursa
           tags: |
+            type=raw,value=latest,enable=${{ github.ref == format('refs/heads/{0}', 'main') }}
+            type=semver,pattern={{version}}
+
+      - name: Build and push
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          file: Dockerfile
+          push: true
+          platforms: linux/amd64,linux/arm64
+          tags: ${{ env.DOCKER_METADATA_OUTPUT_TAGS }}