Fix workflow output > outputs typo. Add labels.

Author: brocaar

.github/workflows/main.yml

@@ -81,7 +81,8 @@ jobs:
         with:
           context: .
           push: true
-          tags: ${{ steps.meta.output.tags }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
       -
         name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }}