Anyone know of a build tool to grab pieces from different places and assemble it all together?

For instance, I might have a serverless file saved as a Gist, a docker-compose.yml in an S3 bucket, a few github repos to clone,ect..

I would like to specify my build asset targets, keys, and whatever else I need and run a cli command and put it all together locally.

Chef might work but seems like overkill.

Thanks in advance.