Custom VCL snippet for fastly is not deployed

We are using Adobe Commerce Cloud v2.4.4 – with the fastly extension 1.2.185

In the documention for custom VCL snippets there is a section for automated custom VCL snippets deployment.

We did add our custom snippet deliver_100_setHttpResponseHeaderXContentTypeOptionsNosniff.vcl to our git repository – below the path var/vcl_snippets_custom.

After performing a deployment to our cloud-environment we expected to find the custom snippet on the server below ~/var/vcl_snippets_custom.
But the file wasn’t there.

Why?