ubuntu/jdk

***led Ubuntu for jdk

Current jdk Docker Image from Canonical, based on Ubuntu. Receives security updates and rolls to newer jdk or Ubuntu release. This repository is free to use and exempt from per-user rate limits.

About jdk

This image packs the Java Development Kit, coming from the OpenJDK project, a free and open source implementation of the Java Platform, Standard Edition (Java SE). OpenJDK is the official reference implementation of Java SE since version 7. Read more. Java is a registered trademark of Oracle and/or its affiliates.

About ***led Ubuntu

The image provides a minimal development rock to build and run Java applications.

Read more about ***led Ubuntu for OpenJDK, a new class of OCI images, on the Ubuntu blog. And remember, the best base image is FROM scratch: so you could also easily craft your own ***led Ubuntu base for your app specific needs.

The images have pebble enter as the entrypoint. You can access the java with the following command:

bash
$ docker run --rm ubuntu/jdk:21-24.04_edge exec java
Usage: java [options] <mainclass> [args...]
...

Tags and Architectures

!LTS Up to 5 years of free security maintenance on LTS channels.

!ESM Up to 10 years of customer security maintenance from Canonical's restricted repositories.

Channel Tags shows the most stable channel for that track ordered stable, candidate, beta, edge. More risky channels are always implicitly available. So if beta is listed, you can also pull edge. If candidate is listed, you can pull beta and edge. When stable is listed, all four are available. Images are guaranteed to progress through the sequence edge, beta, candidate before stable.

Commercial use and Extended Security Maintenance channels

If your usage includes commercial redistribution, or requires ESM or unavailable channels/versions, please get in touch with the Canonical team (or using ***).

Usage

Launch this image locally:

sh
docker run -d --name jdk-container -e TZ=UTC --rm ubuntu/jdk:21-24.04_stable

The container logs will simply show the OpenJDK help message. This is because the container expects a compiled Java application to be given.

Let's use the following Hello World application as an example:

java
// HelloWorld.java

class HelloWorld
{
    public static void main(String args[])
    {
        System.out.println("Hello, World");
    }
}

You can run the above Hello World application using the following command:

bash
docker run -e TZ=UTC -v "$(pwd)":/tmp ubuntu/jdk:21-24.04_edge exec java /tmp/HelloWorld.java

Testing/Debugging

To debug the container:

sh
docker logs -f jdk-container

Debugging

To debug the container:

bash
docker exec openjdk-jdk-container pebble logs

Bugs and feature requests

If you find a bug in our image or want to request a specific feature, please file a bug here:

[***]

Please title the bug "jdk: <issue summary>". Make sure to include the digest of the image you are using, from:

sh
docker images --no-trunc --quiet ubuntu/jdk:<tag>

Deprecated channels & tags

These channels (tags) are not updated anymore. Please upgrade to newer channels, or reach out if you can't upgrade.