author here. I'm assuming you have your organization's docker files in soure control and Jenkins, MAYBE you are buildling on top of the Ubuntu base image. So

author here. I'm assuming you have your organization's docker files in soure control and Jenkins, MAYBE you are buildling on top of the Ubuntu base image. So it shouldn't be buried - you should be able to update in source control and rebuild. (Also, this post is mostly applicable to AMIs). And 100% absolutely, your build system SHOULD be a critical part of your infrastructure. Not mission critical in that it being down is a problem, but it's how you role out changes. This also allows you to continuously test the software going into builds, have dependencies, and all of those things. This is "continuous integration + continuous deployment", but it doesn't have to be continuous. But continuous is a (cough) continuum and there are steps down that road that yield benefits without going all the way.