Add copilot-setup-steps.yml for GitHub Copilot environment configuration

[Copilot]

Configures GitHub Copilot's ephemeral development environment with pre-installed dependencies, avoiding LLM-based trial-and-error discovery during agent tasks.

Changes

• New workflow: .github/workflows/copilot-setup-steps.yml
  • Python 3.10 + dependencies (docker==7.0.0, mysqlclient==2.2.4, pymongo==4.7.2)
  • Pre-builds techempower/tfb Docker image
  • Checkout with fetch-depth: 10 for git history operations
  • Runs on ubuntu-22.04 matching build.yml

Key decisions

• Version pins match Dockerfile for consistency
• Job name copilot-setup-steps required for Copilot recognition
• Minimal permissions (contents: read)
• Workflow triggers included for validation testing

Original prompt

Add copilot-setup-steps.yml adapting from build.yml following https://docs.github.com/en/enterprise-cloud@latest/copilot/how-tos/use-copilot-agents/coding-agent/customize-the-agent-environment#preinstalling-tools-or-dependencies-in-copilots-environment.

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[ShreckYe]

And also CI fails.

[ShreckYe]

This doesn't look like build.yml at all.

[ShreckYe]

I was wrong. The "Copilot Setup Steps" workflow actually worked.