Not at the moment unfortunately. I understand it's more friction, but you can just clone any of those repos and deploy them to FlexStack in 1-click by linking your GitHub account.
Thanks for clarifying. Of those you can 1-click deploy Git-based and Docker-based apps except Docker Compose, since containers are deployed to an ECS cluster. Self-hosted databases are out of scope for what we're trying to do. We're focused instead on making it dead simple to integrate with AWS-managed resources (via resource RBAC, network rules).