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Google Java container tech gets extension framework

Google Java container tech gets extension framework

Google’s Jib allows developers to optimise the creation of Docker containers for Java apps, and tweak the process by customising plug-ins for Maven and Gradle

Credit: Dreamstime

Google has extended its Jib containerisation technology for Java applications with the Jib Plugin Extension Framework, enabling customisation of the Jib plug-ins for the Maven and Gradle build systems.

Available on GitHub and featuring a variety of extensions, the framework allows developers to tailor Jib to their liking. They could, for example, write an extension adding custom image layers whose contents come from a ZIP file.

Developers also could plug in an extension written by someone else and apply it to their own project. Developers could tweak every aspect of an image they want to build.

The Jib containerisation framework was first released in June and is powered by the Container Build Plan Specification, a tool-agnostic mechanism to describe how to build a Docker or OCI container image. Google cited possibilities for the framework including:

  • Fine-tuning image layers
  • Containerising GraalVM native images for fast start-up
  • Containerising jlink images for a small footprint

Google also detailed improved application framework support for Jib, having recently released Maven and Gradle Jib extensions for Spring Boot and Quarkus and a Maven extension for GraalVM.

Jib builds Docker and OCI images for Java applications without a Docker daemon or the need to master Docker best practices. Jib is available as a plug-in for Maven or Gradle and as a Java library.

Google says Jib can turn any Java app into a space-efficient, optimised container image. Images are built in a declarative manner and there is no need to install Docker or write script-like Dockerfiles.


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