Introduction to Containers

An overview of Docker containers.

Docker implements the Open Container Initiative (OCI) specifications. This means some of the things you’ll learn in this chapter will apply to other container runtimes and platforms that implement the OCI specifications.

Docker containers - The TLDR

Containers are run-time instances of images, and we can start one or more containers from a single image. The figure below shows multiple containers started from a single image. The shared image is read-only, but you can write to the containers.

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