Talk about Hypriot Cluster Lab https://github.com/hypriot/cluster-lab at Docker User Group Dresden. Including a live demo with a 5 node Raspberry Pi Pico Cluster featuring Docker, Docker Swarm clustering, Docker-Compose and a microservice architecture example based on Traefik (https://github.com/containous/traefik). The traefik example can be found here: https://github.com/hypriot/rpi-cluster-lab-demos