OpenShift provides officially supported container images that are fully compliant with its security and operational requirements. These images are designed to run smoothly on OpenShift with non-root users, proper permissions, and OpenShift-compatible configurations.
Here’s where you can find OpenShift-supported images:
✅ 1. Red Hat Ecosystem Catalog
- URL: https://catalog.redhat.com/software/containers/explore
- Features:
- Browse certified container images for various platforms, including OpenShift.
- Filter images by categories such as databases, middleware, and languages.
- Access technical details, usage instructions, and security information
✅ 2. Red Hat Universal Base Images (UBI)
🔗 URL: https://developers.redhat.com/products/rhel/ubi
Why Use UBI?
- Universal Base Images are free to use and designed for building OpenShift-compatible applications.
- Includes minimal, standard, and init versions.
- Run as non-root, support Red Hat subscriptions, and are optimized for security updates.
Example to use in Dockerfile:
FROM registry.access.redhat.com/ubi8/nodejs-16
✅ 3. OpenShift Source-to-Image (S2I) Builder Images
🔗 GitHub: https://github.com/sclorg
What it is:
- These are S2I builder images that OpenShift uses for languages like Python, Node.js, PHP, Java, Ruby, etc.
- Maintained by Red Hat and the Software Collections team.
- Designed to be used with OpenShift’s build pipelines.
✅ 4. OpenShift ImageStreams (Internal Registry)
If you install OpenShift, it comes pre-configured with ImageStreams for supported languages and frameworks.
To view them:
oc get imagestreams -n openshift
You’ll see images like:
pythonnodejsnginxdotnetjavamysqlpostgresql
These images are pre-built and maintained to work seamlessly with OpenShift.
✅ 5. Quay.io (Red Hat’s Container Registry)
🔗 URL: https://quay.io/organization/redhat
Details:
- Red Hat hosts many supported images on Quay.io under the
redhatorganization. - These are often used as mirrors or backups to the main Red Hat registry.
- Includes images for Red Hat Middleware, OpenShift Service Mesh, and other operator-backed services.
✅ 6. Red Hat Universal Base Images (UBI)
- Overview: UBIs are freely redistributable base images derived from Red Hat Enterprise Linux (RHEL). They are designed for building containerized applications that can run anywhere, with or without a Red Hat subscription.
- Access UBIs: https://catalog.redhat.com/software/base-images
- Example: The UBI 8 image is available at https://catalog.redhat.com/software/containers/ubi8/ubi/5c359854d70cc534b3a3784e
🔐 Important Notes:
- Non-root: OpenShift does not allow containers to run as root by default. All supported images from the Red Hat catalog are built to run as non-root users.
- Security: All images in Red Hat Catalog and UBI are scanned for vulnerabilities and follow security lifecycle policies.
- License: UBI images are free and don’t require a subscription. Other images may require a Red Hat subscription.
🛠️ Want to Search From CLI?
You can search for images with:
podman search registry.access.redhat.com
Or pull directly:
podman pull registry.access.redhat.com/ubi8/nodejs-16
✅ Recommended Starting Point for Your Own App
If you’re building your own app, start with:
FROM registry.access.redhat.com/ubi8/ubi
Or a specific language runtime:
FROM registry.access.redhat.com/ubi8/python-39
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