setup-turborepo-remote-cache-action

GitHub Action to setup Turborepo CLI Remote Caching in GitHub Workflows.

Usage

In order to use this action, you need to

1. create a Turborepo CLI OIDC policy on your team for the GitHub Workflow(s) you want to enable caching on
2. add a TURBO_TEAM repository variable to your GitHub repository
3. add this action to your GitHub Workflow(s), before calling Turborepo CLI

1. Create a Turborepo CLI OIDC policy

On vercel.com, go to your team's Settings → Build and Deployment → OIDC Policies for CLI Access, and click "Add" next to "Turborepo CLI Policies".

Fill out the form, providing a policy name, choosing a GitHub account and repository. You can optionally restrict to a workflow or branch, and customize the audience.

2. Add a TURBO_TEAM repository variable

In your GitHub repository, go to Settings → Secrets and variables → Actions, and select the "Variables" tab. Create a new repository variable called TURBO_TEAM and set it to your team slug or ID, which can be found on your team's General settings page on vercel.com.

Using a repository variable rather than a secret keeps GitHub Actions from censoring your team name in log output.

3. Add this action to your GitHub Workflow(s)

First, make sure your workflow has the id-token: write permission:

permissions:
  contents: read
  id-token: write

Then, call the action before invoking Turborepo CLI:

- uses: vercel/setup-turborepo-remote-cache-action@v1
  with:
    team: ${{ vars.TURBO_TEAM }}

- run: turbo build

You can tell it's working if the action succeeds and Turborepo CLI logs

   • Remote caching enabled

If more than one of your team's OIDC policies could match this workflow, you will receive an error. Pass the policy ID with the policy input to disambiguate.

Inputs

team

Required. The Vercel team ID or slug you want to use Remote Caching with.

audience

Optional. A custom audience to include in your GitHub OIDC token's aud claim. This must match your Vercel team's Turborepo CLI OIDC policy.

policy

Optional. The ID of the Turborepo CLI OIDC policy to use. Set this when more than one of your team's policies could match the GitHub OIDC token, so that the token exchange can pick the intended policy unambiguously.

How it works

1. You create a Turborepo CLI OIDC policy on your team, which recognizes GitHub OIDC tokens belonging to your GitHub Workflow(s)
2. Then, this action generates a GitHub OIDC token, exchanges it for a short-lived Turborepo CLI access token
3. Finally, this action sets the TURBO_TEAM and TURBO_TOKEN environment variables, so that subsequent calls to Turborepo CLI have Remote Caching enabled

License

MIT