Test environment:

• command to install CRW 2.2.0.RC0:

  crwctl/bin/crwctl server:start --self-signed-cert --che-operator-image=quay.io/crw/operator-rhel8:latest --listr-renderer=verbose -n crw-crwctl-tls-oauth
  

• target OCP of 4.4 version
• crwctl/2.2.0-20200601-1410-quay.b8a6432 linux-x64 node-v10.19.0
• quay.io/crw/operator-rhel8:2.2-8

Keycloak deployment error:

Certificate was added to keystore
Certificate was added to keystore
Certificate was added to keystore
Importing keystore /usr/lib/jvm/java-11/jre/lib/security/cacerts to /opt/eap/openshift.jks...
keytool error: java.io.FileNotFoundException: /usr/lib/jvm/java-11/jre/lib/security/cacerts (No such file or directory)

More logs could be found in here.

Update: there was registry.redhat.io/rh-sso-7/sso74-openshift-rhel8:7.4 image used.