start eventlistener in group

Signed-off-by: jkoberg <jkoberg@owncloud.com>

services/frontend/pkg/command/server.go

@@ -90,8 +90,12 @@ func Server(cfg *config.Config) *cli.Command {
 				logger.Fatal().Err(err).Msg("failed to register the http service")
 			}
 
-			// start event handler
-			go ListenForEvents(cfg, logger)
+			// add event handler
+			gr.Add(func() error {
+				return ListenForEvents(ctx, cfg, logger)
+			}, func(_ error) {
+				cancel()
+			})
 
 			return gr.Run()
 		},