Update tap.go, tapRunner.go, and 3 more files...

cli/cmd/view.go

@@ -4,15 +4,24 @@ import (
 	"github.com/spf13/cobra"
 )
 
+type MizuViewOptions struct {
+	GuiPort                uint16
+}
+
+var mizuViewOptions = &MizuViewOptions{}
+
 var viewCmd = &cobra.Command{
 	Use:   "view",
 	Short: "Open GUI in browser",
 	RunE: func(cmd *cobra.Command, args []string) error {
-		runMizuView()
+		runMizuView(mizuViewOptions)
 		return nil
 	},
 }
 
 func init() {
 	rootCmd.AddCommand(viewCmd)
+
+	viewCmd.Flags().Uint16VarP(&mizuViewOptions.GuiPort, "gui-port", "p", 8899, "Provide a custom port for the web interface webserver")
+
 }