Customizing the development environment for GitHub Copilot coding agent

[BenjaminMichaelis]

https://docs.github.com/en/enterprise-cloud@latest/copilot/how-tos/use-copilot-agents/coding-agent/customize-the-agent-environment

Sample:

name: "Copilot Setup Steps"

# Automatically run the setup steps when they are changed to allow for easy validation, and
# allow manual testing through the repository's "Actions" tab
on:
 workflow_dispatch:
 push:
 paths:
 - .github/workflows/copilot-setup-steps.yml
 pull_request:
 paths:
 - .github/workflows/copilot-setup-steps.yml

jobs:
 # The job MUST be called `copilot-setup-steps` or it will not be picked up by Copilot.
 copilot-setup-steps:
 runs-on: ubuntu-latest

 # Set the permissions to the lowest permissions possible needed for your steps.
 # Copilot will be given its own token for its operations.
 permissions:
 # If you want to clone the repository as part of your setup steps, for example to install dependencies, you'll need the `contents: read` permission. If you don't clone the repository in your setup steps, Copilot will do this for you automatically after the steps complete.
 contents: read

 # You can define any steps you want, and they will run before the agent starts.
 # If you do not check out your code, Copilot will do this for you.
 steps:
 - name: Checkout code
 uses: actions/checkout@v5

 - name: Set up Node.js
 uses: actions/setup-node@v4
 with:
 node-version: "20"
 cache: "npm"

 - name: Install JavaScript dependencies
 run: npm ci

Reuse/share components from our existing CI pipelines where we can