Today, your Linux containers are not really portable - you have to build one for each destination platform. Until now. The new Red Hat Universal Base Images enable you to build your container ONCE and freely redistribute it to multiple deployment platforms - whether Red Hat or not. Read more about UBI below, or visit the Red Hat container tools topic.

In this brief video, Red Hat's Scott McCarty demonstrates Red Hat Universal Base Images by creating a container image on Fedora, then deploying it on Red Hat Enterprise Linux 8.

UBI graphic student at desk

Red Hat UBI is a Verified Publisher on Docker Hub

Red Hat Universal Base Images (UBI) on Docker Hub are now available as Verified Publisher images in a variety of configurations and sizes, including Micro, the newly announced variation with Red Hat Enterprise Linux 8.4 that delivers the smallest UBl footprint for edge computing.

UBIs are Open Container Initiative (OCI)-compliant, freely redistributable, container base operating system images that include complimentary runtime languages and packages, but previously, you could only get these images from the Red Hat container catalog.

Now, you can get them in Docker Hub, making it even easier for you to build and deploy UBI-based containers anywhere.


Read the press release

What's included in UBI?

Less than the full operating system, the Red Hat Universal Base Image includes three things:

Base Images

A set of three base images (Minimal, Standard, and Multi-service) are provided to provide optimum starting points for a variety of use cases.

Runtime Languages

A set of language runtime images (PHP, Perl, Python, Ruby, Node.js) enable developers to start coding out of the gate with the confidence that a Red Hat built container image provides.

Complementary packages

A set of associated YUM repositories/channels include RPM packages and updates that allow users to add application dependencies and rebuild UBI container images anytime they want.


3 UBI base image options

Red Hat provides these three base images for starting your container development:


Image name: ubi

-Unified, OpenSSL crypto stack
-Full YUM stack
-Includes useful basic OS tools (tar, gzip, vi, etc.)

UBI Platform documentation


Image name: ubi-minimal

-Minimized pre-installed content set
-No suid binaries
-Minimal package manager (install, update, and remove)

UBI minimal documentation


Image name: ubi-init

-run mysql and httpd side-by-side in the same container
-run systemd in a container on start
-Enables services at build time

UBI Multi-service documentation

Containers for grownups

Container development tools

Learn about Linux containers and Red Hat container development tools.

Container Topic page

UBI ebook cover

Red Hat Universal Base Images (UBI)


As a developer, you need a source of container base images that have many of the qualities of Red Hat Enterprise Linux, but that can be consumed by your users/customers without acquiring a Red Hat subscription.

Red Hat provides this with Universal Base Images (UBI), a subset of Red Hat Enterprise Linux for building applications in containers - what’s different is they have their own unique EULA which means they are freely redistributable.

UBI provides trusted and redistributable base images. Learn all you need to know about UBI in this free resource.


Download ebook now

Container certification

Are you a software provider or Independent Software Vendor (ISV)?


In order to meet enterprise customers' security and support requirements, software vendors can take advantage of Red Hat Container Certification. Once certified, partner applications are fully supported by Red Hat when deployed on Red Hat container platforms, such as Red Hat Enterprise Linux or Red Hat OpenShift. 

Partner benefits of Red Hat Container Certification

  • Continuous monitoring of certified images to identify security risks or outdated components.
  • Security vulnerabilities can be automatically updated and published.
  • Reduce development costs by standardizing on a robust container foundation. 
  • Prepares you for Red Hat OpenShift Operator Certification to manage your application with the best enterprise distribution of Kubernetes.

Learn more about Red Hat Technical Partner Program and Container Certification.


UBI and container blog articles for you

Featured image for Operators topics.
Jul 23, 2024

How to get Red Hat OpenShift operators' information without oc-mirror plug-in

Eric Beaudoin

Learn how to create an OpenShift operator oc-mirror's ISC configuration file...

Colorful abstract coding elements displayed over a dark gray background.
Jul 18, 2024

Accessing Red Hat Data Grid in Red Hat OpenShift Container Platform 4

Francisco De Melo Junior

When deploying an application to access Data Grid deployed via Data Grid...

Jul 17, 2024

A brief introduction to Apps and Stacks Container Images

Petr Hracek

This article aims to describe Apps and Stacks container images from two...

UBI Frequently Asked Questions

If you have questions about Red Hat Universal Base Images, we hope this FAQ document has your answers.