Keyclock stops instantly after docker run command following the jboss/keycloak Docker Hub instruction

Hi, I’m trying to create a docker instance of Keycloak following the instructions on the Docker Hub of jboss/keycloak site with the latest version. However, it started and stopped instantly.

The last status on the commend line was:
/opt/jboss/tools/docker-entrypoint.sh: line 156: DB_ADDR: unbound variable

Also attached an image of the detailed steps performed.

Please helps and thank you in advance!