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ImageLayers.io is a new project from the team at CenturyLink Labs. This utility provides a visualization in the browser of user-specified Docker Images and their layers. This visualization provides key information on the composition of a Docker Image and any commonalities between them. ImageLayers.io allows Docker users to easily discover best practices for image construction, and aid in determining which images are most appropriate to use in their specific use cases.
##What are Layers? Docker uses a union file system for managing images. Each layer of your image is the result of some action taken during the build. This could be installing a package, copying files from a local or remote source, or setting an environment variable. Each action creates a new layer in the file system; layers reference their parents and are cached, so they may be use