The article provides a comprehensive guide on setting up a private Docker registry on Linux, emphasizing the importance of a private registry in enterprise environments for enhanced security and control over Docker images. It outlines the step-by-step process of installing Docker and Docker Compose, configuring NGINX for reverse proxy, setting up SSL for secure connections using Let's Encrypt, and implementing basic authentication to restrict access. The guide also covers creating and publishing a custom Docker image to the private registry and demonstrates pulling the image from the registry to verify its functionality. This setup ensures secure image storage and management, offering benefits like centralized management, access control, and cost savings compared to public registries. Additionally, the article mentions Earthly, a tool designed to optimize Docker builds with features like reproducible and parallel builds, and concludes by highlighting the expertise of the author, Hitesh Jethva, in Linux and Docker environments.