fleetctl preview: Clarify that this is for trying Fleet (#44133)

- Add link to deploy Fleet for long-lived instances (shown in `fleetctl
preview` Description field)
- Add helpful message after preview setup completes: "Use the stop and
reset subcommands to manage the server and dependencies once started."

cmd/fleetctl/fleetctl/preview.go

@@ -97,12 +97,10 @@ func newDockerCompose() (dockerCompose, error) {
 
 func previewCommand() *cli.Command {
 	return &cli.Command{
-		Name:    "preview",
-		Aliases: []string{"sandbox"},
-		Usage:   "Start a sandbox deployment of the Fleet server",
-		Description: `Start a sandbox deployment of the Fleet server using Docker and docker compose. Docker tools must be available in the environment.
-
-Use the stop and reset subcommands to manage the server and dependencies once started.`,
+		Name:        "preview",
+		Aliases:     []string{"sandbox"},
+		Usage:       "Start a sandbox deployment of the Fleet server",
+		Description: `The quickest way to try Fleet. For a long-lived instance, deploy Fleet: https://fleetdm.com/learn-more-about/deploy-fleet`,
 		Subcommands: []*cli.Command{
 			previewStopCommand(),
 			previewResetCommand(),
@@ -480,6 +478,8 @@ Use the stop and reset subcommands to manage the server and dependencies once st
 			}
 
 			fmt.Println("Preview environment complete. Enjoy using Fleet!")
+			fmt.Println()
+			fmt.Println("Use the fleetctl stop and fleetctl reset subcommands to shut down Fleet or start fresh.")
 
 			return nil
 		},

website/config/routes.js

@@ -1280,6 +1280,7 @@ module.exports.routes = {
   'GET /learn-more-about/certificates': '/guides/connect-end-user-to-wifi-with-certificate',
   'GET /learn-more-about/enrollment-profiles': 'https://developer.apple.com/documentation/devicemanagement/profile?changes=l_11_5',
   'GET /learn-more-about/psso-local-account': '/guides/setup-experience',
+  'GET /learn-more-about/deploy-fleet': '/docs/deploy/deploy-fleet',
 
   // Sitemap
   // =============================================================================================================