This is a utility I build to be able to make sure my JS CLI's actually work across the version I want to support.

Right now, the tool also works across any language where there is docker images with versions, not just for JavaScript/NodeJS. It's enough with having a Dockerfile with $VERSION (that will be replaced by the tool) and changing the test command. I will make this easier in the future.

Thanks for taking a look and please let me know what you think about it.