authentik:
    env:
        CMD_OAUTH2_USER_PROFILE_URL: https://authentik.example.com/application/o/userinfo/
        CMD_OAUTH2_USER_PROFILE_USERNAME_ATTR: preferred_username
        CMD_OAUTH2_USER_PROFILE_DISPLAY_NAME_ATTR: name
        CMD_OAUTH2_USER_PROFILE_EMAIL_ATTR: email
        CMD_OAUTH2_TOKEN_URL: https://authentik.example.com/application/o/token/
        CMD_OAUTH2_AUTHORIZATION_URL: https://authentik.example.com/application/o/authorize/
        CMD_OAUTH2_CLIENT_ID: hedgedoc
        CMD_OAUTH2_PROVIDERNAME: Authentik
    uncomment: 
        - compose.oauth.yml
        - SECRET_OAUTH_KEY_VERSION
    shared_secrets:
        hedgedoc_secret: oauth_key