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Dockerfile-less container builds

Dockerfile-less container builds are a method of creating container images without manually authoring a Dockerfile.^[pack.md]

Overview

This approach is primarily associated with Cloud Native Buildpacks, which transform application source code into OCI-compliant container images automatically.^[pack.md] A key tool in this ecosystem is pack, a CLI maintained by the Cloud Native Buildpacks project to facilitate these builds.^[pack.md]

How it works

Instead of defining instructions in a Dockerfile, the build tool analyzes the project's source code to automatically detect the language and build system.^[pack.md] For example, it can identify and handle projects using build tools like Maven or Gradle without manual configuration.^[pack.md] The tool then constructs the image by assembling the necessary dependencies and runtime environment based on this detection.^[pack.md]

Sources

^[pack.md]