Try:
solace-pubsub-standard $ vi Dockerfile
FROM solace/solace-pubsub-standard
USER root
RUN microdnf update -y
solace-pubsub-standard $ docker build -t solace-pubsub-standard:20220531 .
output is:
Transaction Summary:
Installing: 5 packages
Reinstalling: 0 packages
Upgrading: 116 packages
Obsoleting: 0 packages
Removing: 0 packages
Downgrading: 0 packages