As this has been reported also in a support ticket, I will just copy the possible solution here:
This error indicates that you might no longer have the base image (hence the fact that docker can't find it, and defaults to trying to pull it from the Hub).
Please note that the base image must be built at each DSS upgrade.
Check if you have base image actually present:
Then please make sure you can authenticate with your docker registry:
docker login <registry public hostname>
If you have a base image present and can authenticate successfully, try rebuilding image
and push it to docker registry:
./bin/dssadmin build-base-image --type api-deployer