=language-yaml data-expandlinks=true data-repo=istio>apiVersion: wasme.io/v1
kind: FilterDeployment
metadata:
  name: bookinfo-custom-filter
  namespace: bookinfo
spec:
  deployment:
    istio:
      kind: Deployment
      labels:
        app: details
  filter:
    config: &#39;world&#39;
    image: webassemblyhub.io/ceposta/demo-add-header:v0.2
</code></pre><p>We could then take this <code>FilterDeployment</code> document and version it with the rest of our Istio resources. You may be wondering why we need