openjdk-fips

Dev

Fips

Stig

Updated 9 hours ago

OpenJDK-FIPS Overview

Secure your stack with a hardened OpenJDK-FIPS image freshly-built by Minimus. Minimus images always include the most up-to-date package version for all packages and dependencies contained in the image.

OpenJDK (Open Java Development Kit) is an open-source implementation of the Java Platform, Standard Edition (Java SE). It is a great default choice for Java projects requiring a Java compiler (javac) and standard Java libraries. See also the Minimus tutorial for Java and Minimus tips for multi-stage builds.

FIPS 140-3 Certification

This image is FIPS-validated to ensure its cryptographic operations meet the Federal Information Processing Standards (FIPS) required for secure government and regulated environments. Its core cryptographic modules are validated under the NIST Cryptographic Module Validation Program (CMVP) and comply with the FIPS 140-3 standard.

To verify that the FIPS 140-3 provider is configured and active, follow the instructions in the FIPS compliance tab.

Try It Out

To take the Minimus OpenJDK image for a test run, we will require both OpenJDK and OpenJRE in our Dockerfile to keep the build and runtime environments separate and include only the compiled .class in the final image. Our test will also involve a Java project with a simple program that prints a welcome message.

First, create 2 files in your directory:

Dockerfile
MyMinimus.java

Save the following code to your Dockerfile:

# === Build Stage ===

FROM reg.mini.dev/openjdk-fips AS builder

COPY MyMinimus.java /home/build/

WORKDIR /home/build/

RUN javac -d /home/build MyMinimus.java
       
# === Runtime Stage ===

FROM reg.mini.dev/openjre-fips

COPY --from=0 /home/build/MyMinimus.class /app/

WORKDIR /app/

CMD ["java", "MyMinimus"]

Save the following Java script to the file MyMinimus.java. Note that for Java to compile properly, the filename must match the public class name, so be sure to save the file as MyMinimus.java.

 class MyMinimus
 {
     public static void main(String args[])
     {
         System.out.println("Welcome to MyMinimus!");
     }
 }

Next, build the custom image and run it. Note that the period . specifies the current directory as the build context:

docker build -t minimus-java-app .
docker run minimus-java-app

You should see the greeting Welcome to MyMinimus! in your terminal.

Technical Considerations

The OpenJDK-FIPS image provided by Minimus is a slim, security-hardened alternative to the public image from eclipse-temurin (since the Docker official image is deprecated). The images are largely interchangeable, with a few differences as noted below.

OpenJDK-FIPS built by Minimus:

Runs as non-root by default for a security-first approach that protects against privilege escalation attacks. The public image runs as root.
The entrypoint is null, while the public image entrypoint script defaults to /__cacert_entrypoint.sh. The default CMD is jshell in both images.
The default working directory is /home/build. For the public image, the default working directory is the root directory (/).
Drill down on the version specification tab to see the default user, listening ports, entrypoint, volumes, environment variables, etc.

The Payoff

A hardened, minimal image that will remain more secure for the long run and accrue vulnerabilities at a slower rate.

See the risk reduction dashboard for a detailed CVE comparison over the past 30 days.
Review the compliance report to see the default hardening and security configurations for the image.

Terms & Info

Trademark

This catalog is published by Minimus. All product names, logos, and marks, other than those belonging to Minimus, shown are owned by their respective rights holders and appear here only to identify the open source software each image contains. Minimus claims no ownership of those marks and implies no affiliation with, endorsement by, certification by, or sponsorship by any rights holder.

Disclaimer

Images are provided "as-is" without warranty of any kind. "Hardened" refers to the security configuration applied at the time of build and does not constitute a guarantee of ongoing security or absence of vulnerabilities. The free tier is provided without support, SLA, or guaranteed patching timelines. Security updates may be applied to paid subscriptions before or instead of free tier images. By pulling or using any image you agree to our Terms of Use.