红帽全球峰会5.5. 在容器中运行时提供初始 admin 凭据
Red Hat build of Keycloak 只允许从本地网络连接创建初始 admin 用户。在容器中运行时并非如此，因此您必须在运行镜像时提供以下环境变量：
setting the admin username setting the initial password
# setting the admin username
-e KC_BOOTSTRAP_ADMIN_USERNAME=<admin-user-name>
# setting the initial password
-e KC_BOOTSTRAP_ADMIN_PASSWORD=change_me
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