How to add custom cert for corporate registry?

Solution In Progress - Updated -


In the company, there is a container registry and the url is something like "". Moreover, it uses https protocol.

According to this doc, additionalTrustedCA is added but it failed to pull image from the registry.

Failed to pull image “”: rpc error: code = Unknown desc = pinging docker registry returned: Get x509: certificate signed by unknown authority


OpenShift Container Platform
- 4.x

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