...It starts with images and containers, then layers on volumes, networks, and multi-container composition so learners grasp how pieces fit together. The material emphasizes doing over reading: you build images, run services, and push to registries as you go, reinforcing concepts with real commands. It also connects Docker to everyday developer workflows, covering topics like local development setups, environment variables, and debugging techniques. By the end, readers are comfortable packaging applications and orchestrating them locally, with pointers toward production considerations. ...