COP-018: Copilot Setup Steps Missing or Invalid copilot-setup-steps Job

Summary

• Rule ID: COP-018
• Severity: HIGH
• Category: GitHub Copilot
• Normative Level: MUST
• Auto-Fix: No
• Verified On: 2026-02-13

Applicability

• Tool: github-copilot
• Version Range: unspecified
• Spec Revision: unspecified

Evidence Sources

• https://docs.github.com/en/copilot/how-tos/agents/copilot-coding-agent/customizing-the-development-environment-for-copilot-coding-agent

Test Coverage Metadata

• Unit tests: true
• Fixture tests: true
• E2E tests: false

Examples

The following examples demonstrate what triggers this rule and how to fix it.

Invalid

jobs:
  setup:
    runs-on: ubuntu-latest
    steps:
      - run: echo setup

Valid

jobs:
  copilot-setup-steps:
    runs-on: ubuntu-latest
    steps:
      - run: echo setup