Chainguard Container for jetty

Eclipse Jetty is a lightweight, highly scalable, Java-based web server and Servlet engine

Chainguard Containers are regularly-updated, secure-by-default container images.

Download this Container Image

For those with access, this container image is available on cgr.dev:

docker pull cgr.dev/ORGANIZATION/jetty:latest

Be sure to replace the ORGANIZATION placeholder with the name used for your organization's private repository within the Chainguard Registry.

Compatibility Notes

The Chainguard Jetty image is designed to be a drop-in replacement for the official Jetty images with one key difference in directory ownership: $JETTY_HOME (located at /usr/local/jetty) is owned by root instead of the jetty user. This follows Jetty's best practices, as $JETTY_HOME contains the binary installation and should not be modified during runtime.

Getting Started

Running the Default Jetty Server

To run the default Jetty server:

docker run -d -p 8080:8080 cgr.dev/ORGANIZATION/jetty:latest

To view the configuration of the Jetty server:

docker run cgr.dev/ORGANIZATION/jetty:latest --list-config

Web Application Deployment

By default, Jetty comes with the following modules enabled: http, server, resources, and ext. To deploy web applications, you need to enable additional deployment modules, such as static-deploy, core-deploy, or ee{8,9,10,11}-deploy, depending on your environment.

The recommended approach is to extend the base Jetty image, enable the modules you need, place your applications under $JETTY_BASE/webapps (by default, $JETTY_BASE is /var/lib/jetty), and adjust configuration via .ini files in $JETTY_BASE/start.d.

For example, to deploy Jetty's demo webapp, you can create a Jetty image by extending the base image and enabling the demos module.

mkdir -p /tmp/jetty-demo-image

cat > /tmp/jetty-demo-image/Dockerfile << EOF
FROM cgr.dev/ORGANIZATION/jetty:latest

# Enable the EE 11 deployment and demo applications
RUN java -jar "$JETTY_HOME/start.jar" --add-modules=demos
EOF

docker build -t jetty-demo-image /tmp/jetty-demo-image

Run the demo image:

docker run -d -p 8080:8080 jetty-demo-image

Verify that the server is running and serving the demo application:

curl localhost:8080

Documentation and Resources

• Jetty Official Website
• Jetty GitHub Repository
• Official Jetty Docker Image

What are Chainguard Containers?

Chainguard Containers are minimal container images that are secure by default.

In many cases, the Chainguard Containers tagged as :latest contain only an open-source application and its runtime dependencies. These minimal container images typically do not contain a shell or package manager. Chainguard Containers are built with Wolfi, our Linux undistro designed to produce container images that meet the requirements of a more secure software supply chain.

The main features of Chainguard Containers include:

• Minimal design, without unnecessary software bloat
• Daily builds to ensure container images are up-to-date with available security patches
• High quality build-time SBOMs attesting to the provenance of all artifacts within the image
• Verifiable signatures provided by Sigstore
• Reproducible builds with Cosign and apko (read more about reproducibility)

For cases where you need container images with shells and package managers to build or debug, most Chainguard Containers come paired with a -dev variant.

Although the -dev container image variants have similar security features as their more minimal versions, they feature additional software that is typically not necessary in production environments. We recommend using multi-stage builds to leverage the -dev variants, copying application artifacts into a final minimal container that offers a reduced attack surface that won’t allow package installations or logins.

Learn More

To better understand how to work with Chainguard Containers, please visit Chainguard Academy and Chainguard Courses.

In addition to Containers, Chainguard offers VMs and Libraries. Contact Chainguard to access additional products.

Trademarks

This software listing is packaged by Chainguard. The trademarks set forth in this offering are owned by their respective companies, and use of them does not imply any affiliation, sponsorship, or endorsement by such companies.