Merge pull request 'Fix tag calculation' (#970) from deploy-tag into main

Reviewed-on: #970

.github/workflows/deploy-docker.yaml

@@ -29,4 +29,4 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           push: true
-          tags: plumeorg/plume:${{ github.ref == 'main' && 'latest' || github.ref }}
+          tags: plumeorg/plume:${{ startwWith(github.ref, 'refs/tags/') && github.ref || 'latest' }}