Chapter 9: Pushing Images to a Container Registry

In the previous chapter, we went through the very important concept of the container base image. As we saw, it is really important to choose the base image wisely for our containers, using official container images from trusted container registries and development communities.

But once we choose the preferred base image and then build our final container image, we need a way to further distribute our work to the various target hosts that we plan to let it run on.

The best option to distribute a container image is to push it to a container registry and after that, let all the target hosts pull the container image and run it.

For this reason, in this chapter, we're going to cover the following main topics:

• What is a container registry?
• Cloud-based and on-premise container registries
• Managing container images with Skopeo
• Running a local container registry