How to setup DRAWIO_CONFIG variate in docker-compose.yaml

[pengshp]

Hello!
DRAWIO_CONFIG variate,
What should I write after the variable?
I can't understand! it's a path for json file or content of json file?
Please give example DRAWIO_CONFIG for self-contained.

Thanks!

[davidjgraph]

You don't set it in the compose, you set window.DRAWIO_CONFIG in the PreConfig.js file and mount it into docker.