Add envVars for CLI arguments (#14114)

fixes #14107

cmd/server-main.go

@@ -54,20 +54,24 @@ var ServerFlags = []cli.Flag{
 		Name:   "address",
 		Value:  ":" + GlobalMinioDefaultPort,
 		Usage:  "bind to a specific ADDRESS:PORT, ADDRESS can be an IP or hostname",
+		EnvVar: "MINIO_ADDRESS",
 	},
 	cli.IntFlag{
 		Name:   "listeners",
 		Value:  1,
 		Usage:  "bind N number of listeners per ADDRESS:PORT",
+		EnvVar: "MINIO_LISTENERS",
 	},
 	cli.StringFlag{
 		Name:   "console-address",
 		Usage:  "bind to a specific ADDRESS:PORT for embedded Console UI, ADDRESS can be an IP or hostname",
+		EnvVar: "MINIO_CONSOLE_ADDRESS",
 	},
 	cli.DurationFlag{
 		Name:   "shutdown-timeout",
 		Value:  xhttp.DefaultShutdownTimeout,
 		Usage:  "shutdown timeout to gracefully shutdown server",
+		EnvVar: "MINIO_SHUTDOWN_TIMEOUT",
 		Hidden: true,
 	},
 }