Source – techrepublic.com With Docker images, you can easily deploy containers without having to worry about maintaining the same overhead required by virtual machines. These containers can be pulled from the Docker Hub with ease, for easy use. Let’s say, for example, you want to pull down the latest Ubuntu image for development purposes. However, before you start development, there are a number of changes you need to make to the image (such as updating, upgrading, and adding the build-essential package