Update main.yml

Author: lolouk44

.github/workflows/main.yml

@@ -29,4 +29,4 @@ jobs:
           docker buildx build --no-cache --push \
             --tag lolouk44/xiaomi-mi-scale-ha-add-on:${{ github.event.release.tag_name }} \
             --tag lolouk44/xiaomi-mi-scale-ha-add-on:latest \
-            --platform linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8 mi-scale/.
+            --platform linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64/v8 mi-scale/Dockerfile