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Sign InMinimalist Wolfi-based Java JRE image using OpenJDK. Used for running Java applications.
Chainguard Images are regularly-updated, minimal container images with low-to-zero CVEs.
This image is available on cgr.dev
:
Be sure to replace the ORGANIZATION
placeholder with the name used for your organization's private repository within the Chainguard registry.
Like most available alternatives, Chainguard's JRE image is built directly from the OpenJDK project. The Chainguard JRE image has few-to-zero CVEs and does not run as the root user.
A JRE is the standard runtime for a Java application and is used for running an already developed and packaged Java application. Generally, you will combine your application with the Chainguard JRE image and Docker or a build tool like Maven or Gradle
Using Maven or Gradle, you can compile and package your application. Jib is a tool from Google Container Tools which builds optimized Docker and OCI images for Java applications. It's available as a plugin for both Maven and Gradle, as well as a Java library.
The Jib GitHub repository includes a useful example application that works with Maven or Gradle.
Using Helm to deploy your JRE-based application image is relatively straightforward using either this Kubernetes Service Helm Chart or this Service Helm Chart from ArtifactHub.
The latest builds of Chainguard's JRE image pass the TCK for OpenJDK Java 21.0.3 and Java 22.0.1 as provided by OpenJDK Community TCK License Agreement (OCTLA) and are Java Compatibility Kit (JCK) conformant.
If you have a Zendesk account (typically set up for you by your Customer Success Manager) you can reach out to Chainguard's Customer Success team through our Zendesk portal.
Chainguard Images are a collection of container images designed for security and minimalism.
Many Chainguard Images are distroless; they contain only an open-source application and its runtime dependencies. These images do not even contain a shell or package manager. Chainguard Images are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a secure software supply chain.
The main features of Chainguard Images include:
-dev
VariantsAs mentioned previously, Chainguard’s distroless Images have no shell or package manager by default. This is great for security, but sometimes you need these things, especially in builder images. For those cases, most (but not all) Chainguard Images come paired with a -dev
variant which does include a shell and package manager.
Although the -dev
image variants have similar security features as their distroless versions, such as complete SBOMs and signatures, they feature additional software that is typically not necessary in production environments. The general recommendation is to use the -dev
variants only to build the application and then copy all application artifacts into a distroless image, which will result in a final container image that has a minimal attack surface and won’t allow package installations or logins.
That being said, it’s worth noting that -dev
variants of Chainguard Images are completely fine to run in production environments. After all, the -dev
variants are still more secure than many popular container images based on fully-featured operating systems such as Debian and Ubuntu since they carry less software, follow a more frequent patch cadence, and offer attestations for what they include.
To better understand how to work with Chainguard Images, we encourage you to visit Chainguard Academy, our documentation and education platform.
Chainguard Images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" version of this image:
Apache-2.0
BSD-3-Clause
Bitstream-Vera
FTL
GCC-exception-3.1
GPL-2.0-or-later
GPL-3.0-or-later
For a complete list of licenses, please refer to this Image's SBOM.
Software license agreementA FIPS validated version of this image is available for FedRAMP compliance. STIG is included with FIPS image.