Keycloak/SPNEGO and docker


we could successfully set up SPNEGO under debian 8.10 but cannot replicate under docker. We’re building our own image derived from jboss/keycloak:9.0.3 in which we install the kerberos client, copy the krb5.conf and keytab files, replicate the configuration but land on a keycloak page saying “We’re sorry…
Kerberos is not set up. You cannot login.” (the browser flow has Kerberos required). The log file has no useful information and we started a container with ROOT_LOGLEVEL set to DEBUG that show some additional logs but nothing really useful either.

We’re a bit lost as to why it wouldn’t work in docker.

Thanks for your insight