x509: certificate signed by unknown authority error from private registry after CA trust has been updated

Issue

• After updating a system with the CA for a private registry, the following error is reported when attempting a docker login:

    Error response from daemon: Get https://registry.example.com/v1/users/: x509: certificate signed by unknown authority

• When loading the images at web console:

Could not load image metadata.
Internal error occurred: Get https://<registry.example.com>:<port>/v2/: x509: certificate signed by unknown authority"