An image is a template of a virtual hard drive. It determines the operating system and other software for a compute instance. In order to use CAPOCI, you must prepare one or more custom images which have all the necessary Kubernetes components pre-installed. The custom image(s) will then be used to instantiate the Kubernetes nodes.
To create your own custom image in your Oracle Cloud Infrastructure (OCI) tenancy, navigate to The Image Builder Book and follow the instructions for OCI.