Actually you shouldn't, in the sense that there's nothing certifying that the images are 'clean'. But: I downloaded one of the images just for testing out some

Actually you shouldn't, in the sense that there's nothing certifying that the images are 'clean'. But: I downloaded one of the images just for testing out some servers setup locally (no deployment to the wild net) and for that I think it's gonna be fine. Of course, I'll give it minimal access to the Internet.