Such a helpful comment. Just in this one note, I learned a few things about Docker that I had no idea about: 1) a layer is essentially a docker image in itself

Such a helpful comment. Just in this one note, I learned a few things about Docker that I had no idea about: 1) a layer is essentially a docker image in itself and 2) a layer is as static as the image itself 3) Docker images ship with all layers Thanks jchw!