Pre-built micro container images for developers based on Red Hat UBI technology

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ubi-micro-dev is a curated collection of distroless, OCI-compliant container images based on Red Hat’s Universal Base Image (UBI) technology. These images are purpose-built to simplify secure, minimal application hosting.

Red Hat’s official UBI Micro base image is extremely lightweight, omitting the package manager and most supporting tools. While this minimalism is excellent for production security, it can make installing essential runtimes (such as Java, Node.js and Python) unnecessarily complex.

ubi-micro-dev solves this by providing pre-configured, application-ready images that include popular runtimes and libraries out of the box—saving you time and reducing boilerplate in your build process.

• Based entirely on trusted Red Hat UBI technology
• Distroless: no package manager, fewer attack surfaces
• Pre-installed Java, Node.js and Python runtimes
• Fully OCI-compatible
• Designed for secure, minimal deployments

These images are ideal for:

• Java, Node.js and Python developers deploying to Kubernetes
• Teams who want the smallest possible Red Hat–based images without the hassle of manual RPM installs
• CI/CD pipelines requiring predictable, minimal environments

You can pull the images directly and start building your containers without additional configuration.

For example:

FROM ghcr.io/ubi-micro-dev/ubi9-micro-dev-openjdk-21:latest

ADD spring-petclinic-3.4.0-SNAPSHOT.jar .

ENTRYPOINT java -jar spring-petclinic-3.4.0-SNAPSHOT.jar

These images are rebuilt and scanned every 6 hours, and are only ever published with a latest tag. For reproducibility, pull these images into your own registry and assign tags that are meaningful to you.