Docker Images Explained

Learn about Docker images, Docker registry, and how to create a Dockerfile.

Docker images

A Docker image is an executable package of software similar to an application artifact that entails everything needed to run an application and is used on any environment, depending on the instructions used to build it. The Docker image includes source code and complete environment configuration.

An image is designed with a template known as Dockerfile, which defines how an image will run in a container. Containers are running instances of an image, i.e., whenever an image is created and run, a container has been provisioned.

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