Red Hat OpenShift Developer II: Building and Deploying Cloud-native Applications
Red Hat recommends the use of Red Hat Universal Base Images (UBI) as the base container images for your applications. UBI images are certified, tested, and regularly maintained images that Red Hat provides at no cost.
Red Hat provides UBI images for the following runtime languages:
OpenJDK
Node.js
Python
PHP
.NET
Go
Ruby
To authorize OpenShift with an external registry, store credentials for authorizing the registry in OpenShift and associate the credentials with your service account.
Image streams are an OpenShift specific resource that you can use to reference container images by using an intermediate name that points to an image from a container registry.
An image stream represents one or more sets of container images. Each set, or stream, is identified by an image stream tag, which contains a historic list of the container images that the image stream tag referenced along with the container image in use.
