Add checkpoint configuration option to docs and env settings

Author: phrp720

aw-sync-agent/README.md

@@ -128,7 +128,7 @@ The table below details all configurable settings, their purpose, and their defa
 | -pluginsStrictOrder | PLUGINS_STRICT_ORDER | pluginsStrictOrder | When set to true,executes the plugins with the given order                                                                                                                            | ❌        | false                    |
 | -userId             | USER_ID              | userId             | Custom identifier for the user; defaults to the system hostname or a generated ID if unspecified.                                                                                     | ❌        | Hostname or Generated ID |
 | -includeHostname    | INCLUDE_HOSTNAME     | includeHostname    | When set to true, appends the hostname to the exported metrics for better identification in multi-user environments.Otherwise the host value is set to `Unknown`                      | ❌        | false                    |
-
+| -checkpoint         | CHECKPOINT           | checkpoint         | The full path to save the checkpoint checkpoint.If not used the default file is the `checkpoint.json`                                                                                 | ❌        | `checkpoint.json`        |
 #### Configuration Examples
 <ol>
 <li>

aw-sync-agent/settings/settings.go

@@ -121,6 +121,9 @@ func loadEnvVariables(config *Configuration) {
 	if value, exists := os.LookupEnv("INCLUDE_HOSTNAME"); exists {
 		config.Settings.IncludeHostname = value == "true"
 	}
+    if value, exists := os.LookupEnv("CHECKPOINT"); exists {
+		config.Settings.CheckpointFile = value
+	}
 
 }
 
@@ -138,7 +141,7 @@ func loadFlags(config *Configuration) {
 	flag.Var(&plugins, string(Plugins), "Plugins to load")
 
 	flag.BoolVar(&config.Settings.PluginsStrictOrder, string(PluginsStrictOrder), config.Settings.PluginsStrictOrder, "Plugins strict order")
-	flag.StringVar(&config.Settings.CheckpointFile, string(checkpointFile), config.Settings.CheckpointFile, "Checkpoint File found")
+	flag.StringVar(&config.Settings.CheckpointFile, string(checkpointFile), config.Settings.CheckpointFile, "Checkpoint File")
 	flag.StringVar(&config.Settings.Cron, string(Cron), config.Settings.Cron, "Cron expression")
 	flag.StringVar(&config.Settings.PrometheusSecretKey, string(PrometheusSecretKey), config.Settings.PrometheusSecretKey, "Prometheus Secret Key")
 	flag.BoolVar(&config.Settings.AsService, string(AsService), config.Settings.AsService, "Run as service")