NET-13: CI/CD Pipeline and DevOps Setup for .NET Core 6 Migration

[devin-ai-integration]

Summary

Establishes CI/CD pipeline and DevOps infrastructure for the .NET Core 6 migration project, addressing all acceptance criteria in NET-13.

What's included

GitHub Actions Workflows:

• CI (ci.yml): Build → Unit Tests (with Coverlet coverage) → Integration Tests → Coverage threshold enforcement (80%) → HTML report generation
• Code Quality (code-quality.yml): dotnet format verification, NuGet security audit, build warnings analysis (/warnaserror)
• CD (cd.yml): Build & test gate → Docker image build & smoke test → Staging deployment (auto on merge) → Production deployment (manual trigger with environment protection)

Docker Support:

• Multi-stage Dockerfile with health checks and environment configuration
• docker-compose.yml for local development (port 5000) and staging (port 5001)
• .dockerignore to optimize build context

Monitoring & Logging:

• Health check endpoints: /health (readiness), /health/startup (startup), /health/live (liveness) with JSON responses
• Structured logging with per-environment configuration (Development/Staging/Production)
• Request logging middleware tracking HTTP method, path, status code, and elapsed time

Application Code:

• .NET 6 project scaffolding under netcore/ with HomeController, views, and models (consistent with NET-10/NET-12 migration branches)
• Unit tests (9 passing) with xUnit + Moq + FluentAssertions
• Integration tests (10 passing) using WebApplicationFactory including health endpoint verification
• Coverlet code coverage configuration

Documentation:

• netcore/docs/cicd.md covering pipeline architecture, Docker usage, health checks, logging configuration, and extension guides

Review & Testing Checklist for Human

• Verify GitHub Actions workflows trigger correctly on a PR touching netcore/ files
• Review deployment steps in cd.yml and configure platform-specific deployment commands (Azure App Service, AWS ECS, Kubernetes, etc.)
• Set up GitHub environments (staging, production) with URLs and required reviewers for production
• Run docker build -f netcore/Dockerfile -t sample-mvc-webapp . and docker run -p 5000:80 sample-mvc-webapp to verify Docker image works locally
• Confirm health check endpoints return expected JSON at /health, /health/startup, /health/live

Notes

• Workflows are path-scoped to netcore/ to avoid triggering on legacy .NET Framework code changes
• CD deployment steps are placeholder stubs — configure them for your target hosting platform
• The netcore/ directory structure is consistent with the NET-12 testing framework branch and will work alongside the legacy codebase during migration
• All 19 tests (9 unit + 10 integration) pass locally with 0 build warnings

Link to Devin session: https://app.devin.ai/sessions/c463684c032b40a5b93a9ce7c7bee16f

[devin-ai-integration]

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