[sionsmith]

Again not sure how Contino do it but if your using autoscaling groups the best way todo this is pass in a bootstrap script (shell or ansible) into the group when creating it so that will pull down the correct images if more instances are needed. To give yourself some control, you should probably do what we do - pass a simple wget in which pulls an ansible playbook stored in S3 so we can change version numbers etc without taking down the whole group. I've found there are many ways todo this but keeping things simple helps alot.