OpenShift Container Platform 4 support for short names for Container Images in runtime and builds

Solution Verified - Updated -

Issue

  • Configuring unqualified-search-registries for an OpenShift 4 cluster (as described in Specifying "unqualified-search-registries" in "registries.conf" in OCP 4) allows using short image names to deploy images sourced from specified registries before the default ones. The behaviour is different when using short image names in OpenShift builds. The unqualified-search-registries are not checked. The only registry that is searched is docker.io.
  • How to configure unqualified-search-registries created for each OpenShift Build via ConfigMap <build>-<rev>-sys-config?

Environment

  • Red Hat OpenShift Container Platform (RHOCP) 4

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