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Chainguard Images Reference

Image Overview: jdk

Overview: jdk Chainguard Image
Reference Chainguard Images Product

Minimalist Wolfi-based Java JDK image using OpenJDK. Used for compiling Java applications.

Get It!

The image is available on cgr.dev:

docker pull cgr.dev/chainguard/jdk:latest

Use it

Create a simple Java class

cat >HelloWolfi.java <<EOL
class HelloWolfi
{
    public static void main(String args[])
    {
        System.out.println("Hello Wolfi users!");
    }
}
EOL

Next create a multistage Dockerfile and add the Java class

cat >Dockerfile <<EOL
FROM cgr.dev/chainguard/jdk

COPY HelloWolfi.java /home/build/
RUN javac HelloWolfi.java

FROM cgr.dev/chainguard/jre

COPY --from=0 /home/build/HelloWolfi.class /app/
CMD ["HelloWolfi"]
EOL

Build the image

docker build -t my-simple-java-app .

Run the image

docker run my-simple-java-app