Webhook server uses its configured host if set

pkg/webhook/server.go

@@ -20,6 +20,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+	"net"
 	"net/http"
 	"path"
 	"sync"
@@ -218,9 +219,13 @@ func (s *Server) Start(stop <-chan struct{}) error {
 
 func (s *Server) run(stop <-chan struct{}) error { // nolint: gocyclo
 	errCh := make(chan error)
+	host := ""
+	if s.Host != nil {
+		host = *s.Host
+	}
 	serveFn := func() {
 		s.httpServer = &http.Server{
-			Addr:    fmt.Sprintf(":%v", s.Port),
+			Addr:    net.JoinHostPort(host, fmt.Sprintf("%d", s.Port)),
 			Handler: s.sMux,
 		}
 		log.Info("starting the webhook server.")

pkg/webhook/server_test.go

@@ -49,7 +49,7 @@ var _ = Describe("webhook server", func() {
 	Describe("run", func() {
 		var stop chan struct{}
 		var s *Server
-		var cn = "example.com"
+		var cn = "localhost"
 
 		BeforeEach(func() {
 			port, _, err := addr.Suggest()