Connect a running container with its packaged image, registry location, repository name, and immutable digest before choosing what to run.
Beginner13 min read
Docker lessonContainer and orchestration foundationsPractice
UNTIMED COACHING
Practice before the pressure
Use feedback to correct the model, not merely memorize an option position.
GUIDED PRACTICE
Practice the lesson questions
Answer normal lesson questions without a timer. Every answer includes an explanation, and incorrect answers can be tried again before continuing.
20 questions balanced across the lesson's key topics
At least four explanatory diagrams or tables
Retry freely, without a timer or score
CONCEPT MODELS
See the lesson as a system
Use these visual guides to connect the key ideas before answering the questions.
Follow an image into a running containerSeparate the packaged image, registry service, repository mapping, and resulting container process.Verify the exact image before runtimeUse an immutable digest, a local inspection, an exact match, and a boundary against moving tags.