Image vs Containers for Docker

Not many developers explain technologies clearly, either intentionally or incapably. the post here however is one exception:

from: http://blog.codesupport.info/docker-images-vs-containers/

 

IMAGE :- An image is an inert, immutable, file that’s essentially a snapshot of a container. Images are created with the build command, and they’ll produce a container when started with run. Images are stored in a Docker registry such as registry.hub.docker.com. Because they can become quite large, images are designed to be composed of layers of other images, allowing a miminal amount of data to be sent when transferring images over the network.
 CONTAINER :- To use a programming metaphor, if an image is a class, then a container is an instance of a class—a runtime object. Containers are hopefully why you’re using Docker; they’re lightweight and portable encapsulations of an environment in which to run applications.
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Author: lwpro2

Java J2EE professional

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