Pulling image registry.redhat.io/ubi7-minimal:7.7 ...
Warning: Pull failed, retrying in 5s ...
Warning: Pull failed, retrying in 5s ...
Warning: Pull failed, retrying in 5s ...
error: build error: failed to pull image: After retrying 2 times, Pull image still failed due to error: while pulling "docker://registry.redhat.io/ubi7-minimal:7.7" as "registry.redhat.io/ubi7-minimal:7.7": Error initializing source docker://registry.redhat.io/ubi7-minimal:7.7: pinging docker registry returned: Get https://registry.redhat.io/v2/: x509: certificate signed by unknown authority