Deploy Keycloak on the fly

docker run -d -e KEYCLOAK_USER=admin -e KEYCLOAK_PASSWORD=admin -p 8080:8080 --name kc-v15 jboss/keycloak:15.0.2

This command starts a new instance of the keycloak container, binding it to the port 8080 on the host machine. It also sets the environment variables KEYCLOAK_USER and KEYCLOAK_PASSWORD to the values admin and admin, respectively.