refactor(compute/deploy): add setup message for existing service users (

#1052)

pkg/commands/compute/deploy.go

@@ -203,6 +203,9 @@ func (c *DeployCommand) Exec(in io.Reader, out io.Writer) (err error) {
 			}
 			return err
 		}
+		if c.Globals.Manifest.File.Setup.Defined() && !c.Globals.Flags.Quiet {
+			text.Info(out, "\nProcessing of the %s [setup] configuration happens only for a new service. Once a service is created, any further changes to the service or its resources must be made manually.", manifestFilename)
+		}
 	}
 
 	var sr ServiceResources