Core Docker Concepts
Images vs Containers
- Image: A read-only template with instructions for creating a container (like a class)
- Container: A runnable instance of an image (like an object)
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LearnStep 1 of 2
Docker Concepts
Learning Objectives
- •Understand images vs containers
- •Learn about layers
- •Understand registries
Lesson Outline
LearnStep 1/2
Docker Concepts
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Image Layers
Images are built in layers, each representing an instruction in the Dockerfile:
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Docker Registry
A registry stores Docker images. Docker Hub is the default public registry:
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