Mattermost docker preview image what credentials to use?

“Preview mattermost instantly” - except i only see a login page.

docker run --name mattermost-preview -d --publish 8065:8065 mattermost/mattermost-preview

Where can I find the credentials?

Actually, what you see is a user registration page, so right after you start the preview container, you are prompted to create your first user account.There’s no mattermost user account preloaded in the docker-preview.