title: Add custom header to all responses from Traefik on Azure's Service Fabric
body: <p>I've deployed Traefik on an Azure Service Fabric Cluster. Everything works fine as in Traefik (using SFC's APIs) find other guest services and dynamically create the frontend and backend profiles. So I'm not statically configuring any frontend.</p>
  
  <p>Is there a way to tell Traefik to add a custom header to all responses coming from all the froentends?</p>