A system administrator needs to bootstrap a series of Ubuntu images for a public provider. The administrator must ensure at the images contain the exact same updates, custom. Configure files after…

Ansible is a configuration management tool used for automating provisioning and configuration on existing servers, but not primarily for creating initial, immutable application environments like Docker.

Docker allows administrators to define a consistent, reproducible environment using a Dockerfile, which includes exact updates and custom configurations for Ubuntu-based application images. These Docker images can then be deployed consistently across various hosts, ensuring each instance automatically runs with the specified environment from its build.

Cloud-init handles early initialization of a cloud instance on first boot, such as setting hostnames and running scripts, but it doesn't create portable, pre-configured images for entire application stacks.

Anaconda is primarily an installer for Red Hat Enterprise Linux and its derivatives, not a general tool for bootstrapping and automating configuration of Ubuntu images for public providers.