feat(dns): allow setting an externally managed cluster domain

pkg/client/compose/deploy.go

@@ -46,8 +46,8 @@ func NewDeploymentWithStrategy(ctx context.Context, cli Client, project *types.P
 		return nil, fmt.Errorf("get cluster domain: %w", err)
 	}
 	resolver := &deploy.ServiceSpecResolver{
-		// If the domain is not found (not reserved), an empty domain is used for the resolver.
-		ClusterDomain: domain,
+		// If no domain is configured, an empty domain is used for the resolver.
+		ClusterDomain: domain.Name,
 	}
 
 	return &Deployment{