function __construct () {
// Set default DB
$this->default = $_SERVER['SERVER_NAME'] ==’digbiz.example.com’?$this->prod:$this->dev;
}

//check to see if server name is set (thanks Frank)
switch($_SERVER['SERVER_NAME']){
case ‘digbiz.localhost’:
$this->default = $this->dev;
break;
case ‘digbiz.example.com’:
$this->default = $this->prod;
break;
default:
// we are likely baking, use our local db
$this->default = $this->dev;
}

Thanks Frank, that is a beautiful tip.

@ Others..
because baking is running as a script at the console, it does not have server values set. Thus you first check to see if they do not exist(meaning its a local bake), otherwise you may continue by checking names to distinguish development, performance and production servers.

if (isset($_SERVER['SERVER_NAME']) && !strstr($_SERVER['SERVER_NAME'], ‘localhost’)) { etc…