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GoogleContainerTools/jib

This system is a Java containerization toolkit that builds OCI and Docker images from Java applications without requiring a Docker daemon. It provides a core library for constructing and pushing images, alongside plugins for Maven and Gradle, and a command-line interface for direct usage. The system supports various Java frameworks and build configurations, enabling reproducible, multi-platform container builds with integrated credential management and build progress tracking.

70.2

Strong · 29 July 2026

38k

lines of production code

Java

primary language

4

bus factor · 141 authors in all

3

measurements over time

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How it got here

2017–2018 · Core API and build infrastructure overhaul

This period focused on a comprehensive refactoring of the Jib core library, introducing a new public API for image building and a modular builder step system. The team established robust abstractions for HTTP clients, caching, and registry interactions, while simultaneously enhancing build progress reporting and console logging. The work also expanded the project's ecosystem with new framework examples and automated release processes.

77 changes

2019–2020 · CLI restructuring and plugin extension API

This period focused on introducing a plugin extension API to enable third-party customizations for Maven and Gradle builds. Simultaneously, the Jib CLI was restructured to support new buildfile configurations and improved JAR/WAR processing modes. The work was heavily supported by extensive test coverage and automation scripts for releases.

48 changes

2021–2022 · CLI enhancements and core stability

This period focused on expanding the Jib CLI with support for WAR file containerization and improved version reporting. Concurrently, the core library introduced global registry mirror configuration and resolved critical Docker CLI interaction issues on Windows.

9 changes

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About this page

  • The description of this project is derived from its own commit history, not from its README.
  • The score is its highest published measurement, taken on 29 July 2026 at a pinned commit. It is not a live figure and does not change until the project is measured again.
  • Measured at commit fb949e2676 — the exact code this score is about.
  • Scored under rubric rubric-2026.08.18. Score the same commit under that rubric and you get the same number.
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