fix(pidproxy): replace Timer with Ticker

tested: ssh-docker

README.md

@@ -105,8 +105,12 @@ background service is still running, in current implementation it checks every s
 ```shell
 wmpidproxy --pid-file <path to pid file> -- <background service binary/start script>
 ```
+#### Example
+Running sshd background with `wingmate` and `wmpidproxy`: [here](example/ssh-docker/)
 
 ## Wingmate Exec binary
+
+
 ## Wingmate core binary
 ### Service
 ### Cron

cmd/pidproxy/pidproxy.go

@@ -94,13 +94,13 @@ func pidProxy(cmd *cobra.Command, args []string) error {
 		err error
 		pid int
 		sc  chan os.Signal
-		t   *time.Timer
+		t   *time.Ticker
 	)
 
 	sc = make(chan os.Signal, 1)
 	signal.Notify(sc, unix.SIGTERM)
 
-	t = time.NewTimer(time.Second)
+	t = time.NewTicker(time.Second)
 
 check:
 	for {