Dockerized version of Scratch 3 editor from: https://github.com/LLK/scratch-gui
Use the following command to luanch the server(editor):
docker run -p 8601:8601 -d --name scratch3 darkmagus/scratch3
When it is up and running, type http://localhost:8601/ in a browser to access the editor. Google Chrome is recommmended as a good browser that works well with is software.
Thanks to all the developers that have worked on the Scratch project over the years.