Play With Docker: https://labs.play-with-docker.com/ ( https://labs.play-with-docker.com?stack= )
Docker Playground Guide: https://www.guschlbauer.dev/play-with-docker-pwd-an-amazing-one-click-docker-playground-project/
YAML in 5 minutes: https://www.codeproject.com/Articles/1214409/Learn-YAML-in-five-minutes

Portainer-ce: PWD => Portainer.yml (admin/password)
Filebrowser: PWD => Filebrowser.yml
Portainer + Filebrowser: PWD => stack.yml
ToDo stacks:
Portainer + FileBrowser + PostgreSQL + pgWeb/Adminer;

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MySQL+phpMyAdmin: https://labs.play-with-docker.com?stack=https://raw.githubusercontent.com/play-with-docker/stacks/master/mysql/latest/stack.yml
PostgreSQL+pgWeb: https://labs.play-with-docker.com/?stack=https://raw.githubusercontent.com/play-with-docker/stacks/master/postgres/latest/stack.yml (pgWeb container lives for 1s, then "docker ps" is empty!)

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Docker Play workspace:
docker run -d -p 9000:9000 -v /var/run/docker.sock:/var/run/docker.sock --name portainer portainer/portainer
docker run -d -p 8080:80 -v /:/srv/ --name filebrowser filebrowser/filebrowser (admin/admin)