Add notes regarding --log-root to the command reference. (#1582)

- Closes #1529.

docs/command-reference.md

@@ -5,7 +5,7 @@
 >
 > Example: [release 0.4.1 tag](https://github.com/apple/container/tree/0.4.1)
 
-Note: Command availability may vary depending on host operating system and macOS version.
+Command availability may vary depending on your macOS version.
 
 ## Core Commands
 
@@ -896,7 +896,8 @@ container run -v $VOL:/data alpine
 container volume rm $VOL
 ```
 
-**Note**: Unlike Docker, anonymous volumes do NOT auto-cleanup with `--rm`. Manual deletion is required.
+> [!NOTE]
+> Unlike Docker, anonymous volumes do NOT auto-cleanup with `--rm`. Manual deletion is required.
 
 ### `container volume delete (rm)`
 
@@ -1054,6 +1055,9 @@ container system start [--app-root <app-root>] [--install-root <install-root>] [
 *   `--log-root <log-root>`: Path to the root directory for log data, using macOS log facility if not set
 *   `--enable-kernel-install/--disable-kernel-install`: Specify whether the default kernel should be installed or not (default: prompt user)
 
+> [!NOTE]
+> The `--log-root` option is principally intended for short-term test and diagnostic purposes. The log handler for this option neither aggregates log messages, nor does it rotate logs.
+
 ### `container system stop`
 
 Stops the container services and deregisters them from launchd. You can specify a prefix to target services created with a different launchd prefix.
@@ -1151,6 +1155,9 @@ Equivalent to the JSON output but in YAML format. Each entry in the array repres
 
 Displays logs from the container services. You can specify a time interval or follow new logs in real time.
 
+> [!NOTE]
+> If you run `container system start with --log-root`, services only write log messages to files under the log root, and `container system logs` will show no service log messages.
+
 **Usage**
 
 ```bash