Docker is a set of tools and services for building, deploying and managing applications. Docker provides virtualization through application packages, called containers. A container packages the application together with its entire runtime environment, including libraries, configuration files, and other dependencies. Containers run in the Docker environment as instances created from predefined images, and My webMethods Server provides a set of tools for creating and customizing My webMethods Server images for use with Docker, together with different options to modify the configuration of individual containers.