In our previous chapter, during Swarm deploys, we were getting warnings about not using a registry for our images and for a good reason. All the work we did was based on our images being available only to our local Docker Engine so multiple nodes could not have been able to use any of the images that we built. For absolutely bare-bones setups, you can use Docker Hub (https://hub.docker.com/) as an option to host your public images, but since practically every Virtual Private Cloud (VPC) cluster uses their own internal instance of a private registry for security, speed, and privacy, we will leave Docker Hub as an exercise for you if you want to explore it and we will cover how to run our own registry here.
Running your own image registry
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