Summary
In this chapter, we learned about the OCI image specifications and the role of container registries.
After that, we learned how to adopt secure image registries and how to filter out those registries using custom policies that allow us to block specific registries, namespaces, and images.
Finally, we introduced UBI as a solution to create lightweight, reliable, and redistributable images based on RHEL packages.
With the knowledge you've gained in this chapter, you should be able to understand OCI image specifications in more detail and manage image registries securely.
In the next chapter, we will explore the difference between private and public registries and how to create a private registry locally. Finally, we will learn how to manage container images with the specialized Skopeo tool.
