Turborepo support

[aleksrutins]

closes #456

This PR adds Turborepo support to Nixpacks.

• Tests are added/updated if needed
• Docs are updated if needed

[Milo123459]

I've added some changes to dependsOn, making it snake case, so if you apply one, the other suggestions need to be applied. Good work so far!

[Milo123459]

Could you fix conflicts please?

[productdevbook]

new version 1.5.1 and 1.5.0 -> https://turborepo.org/docs/handbook/deploying-with-docker#the-solution prune support

[Milo123459]

@aleksrutins any updates?

[coffee-cup]

This is looking good! Just a few comments/questions. I am mainly concerned with breaking existing Turbo apps that are being built with Nixpacks currently. In all cases that we can't find a Turbo specific command, we should fallback to the default Node provider behaviour (for the most part this PR does that, just had a few questions in some places).

[coffee-cup]

Awesome! Thanks again for adding this 😄

[wladpaiva]

Any docs for this?

[aleksrutins]

Any docs for this?

See: https://nixpacks.com/docs/providers/node

[wladpaiva]

Has it been tested with PNPM? I'm getting a weird error during the build phase

[AlfreddGco]

It seems like this is not working for pnpm (at least for me). After looking a bit into the code and the output of nixpacks it would seem like it prioritizes pnpm over turbo and outputs pnpm command for build instead of turbo command, and hence, it doesn't find the "start" command of the target app in my monorepo

EDIT:
Found the issue. When turborepo.rs tries to read turbo.json, it looks for "pipeline" but turbo uses "tasks" since version 1.7. Although a clear error is not thrown; nixpacks will just say that it didn't find the start command or something like that. Neither I found on the documentation that only turbo < v1.7 is supported.

Possbile fixes:

• downgrade your turbo to v1.6
• Add support for "tasks" on this repo (although not sure if we just need to support that json key or if it implies implementing other stuff to support turbo >= v1.7. I created a PR here