I found an issue with this document.

Title: Monorepo and multi-environment deployments
Location: https://fly.io/docs/launch/monorepo/
Source: https://github.com/superfly/docs/blob/main/launch/monorepo.html.md

Describe the issue

The page describes how to set the working directory and the config path but not how to combine them.

I assumed this would work

fly deploy  ./my-app  --config ./flyio/my-app.toml

But the path to the config needs to be relative from the build context.

So this is correct

fly deploy  ./my-app  --config ../flyio/my-app.toml

This could be specified so others don't have search for it.