Hi @ivan,
can you try adding this two arguments: -Dkeycloak.adminUrl=http://{your_node_base_url}/auth and
-Dkeycloak.frontendUr=http://{your_node_base_url}/auth to keycloak on startup
I saw that there is one env variable to set keycloak.frontendUrl in the official docker image KEYCLOAK_FRONTEND_URL. For keycloak.adminUrl, I think you have to add docker args.
Hope it helps.