Docker provides a comprehensive tool to create, deploy, manage and run containers. In a normal setup, it bases on container technology as well as on Linux control groups and copy-on-write file systems to achieve good manageability and efficiency during execution of containers. Docker distinguishes between images and containers: images are a set of files used to run a container instance. A container is a runnable instance of an image.
Thursday, February 26, 2015
A container provides an envelope for running an application. Only resources assigned to the container are visible inside the container. All containers running in a system use the same OS kernel, but they don't have visibility to each other. A containerized application usually comes as a set of self-contained files, eliminating all dependencies into the host OS environment.
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