This article https://access.redhat.com/documentation/en-us/red_hat_3scale/2.saas/html/deployment_options/apicast-docker (for SaaS and 2.0, correct in 2.1) is pointing to a deprecated APIcast image.

Instead, it should point to:

• 2.0 --> 2.0 apicast image
• SaaS --> I would make the version a param and explain where to find out what's the latest version available or something like that.