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Buildpacks are an OCI-compliant tool for building applications that serve as a higher-level abstraction as opposed to writing Docker files. The project was spawned by Pivotal and Heroku in 2011 and joined the Cloud Native Sandbox in October 2018. Buildpacks has been adopted by Cloud Foundry and other PaaS such as Gitlab, Knative, Deis, Dokku, and Drie. In this tutorial, we're going to learn how to use pack and buildpacks to create a runnable app image.