Publishing and Testing Docker Images on Docker Hub

Containerization is a foundational skill for modern software delivery, but building an image is only the first step. To make your applications truly portable, you must know how to securely distribute and validate your containerized workloads. This text-based course guides you through the entire lifecycle of publishing and testing Docker images using Docker Hub. You will start with the absolute basics, learning core container terminology, how registry authentication works, and how to structure your images for distribution. Next, you will progress to managing environment variables, configuring runtime settings, and verifying that your deployed containers behave exactly as expected. What you'll learn: Understand core registry concepts and how to authenticate securely with Docker Hub. Tag, build, and push Docker images following industry-standard naming conventions. Configure and run containers with environment variables to test different runtime outputs. Implement multi-stage builds to optimize image size and security before publishing. Practice pulling and running your published images on clean environments to verify portability. This course begins with foundational definitions and setup instructions, ensuring you have a solid grasp of container registries before moving on to practical publishing workflows and remote testing strategies. It is designed specifically for beginners with no prior container registry experience, though a basic familiarity with command-line interfaces is helpful. Start reading today to master the essentials of Docker image distribution.