Define a docker image in 10 bullets points
Docker image is a collection of filesystems. Each image has a unique UUID assigned via sha-256 algorithm.Each image and a container has storage device assocaited with it.Each file system represents a layer in the image.The base layer for any image is the rootFS.Every layer comes bundled with it’s parent layer.All the layers of an image are read only.At the time of container start, a merged layer is created including all the layers of corresponding image and made writable for custimization.
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