In this chapter, we dived deeply into Docker registry. We started with the basic concepts of a Docker public repository using Docker Hub and the use-case of sharing containers with a larger audience. Docker also provides the option to deploy a private Docker registry that we looked into and that can be used to push, pull, and share the Docker containers internally in the organization. Then, we looked into tagging and ensuring the integrity of Docker containers by signing them with the help of a Notary server, which can be integrated with Docker Engine. A more robust solution is provided with the help of DTR, which provides enterprise grade Docker image storage on-premises as well as in the virtual private cloud to provide security and meet regulatory compliances. It runs on top of the Docker UCP, as shown in the preceding detailed installation steps. I hope this chapter has helped you troubleshoot and learn the latest trends in Docker registry. In the next chapter, we will look into...