Add security, documentation, and CI/CD infrastructure

[Copilot]

Establishes foundational security practices, comprehensive documentation, and automated quality checks for the Terraform infrastructure.

Security

• SECURITY.md: Vulnerability reporting, AWS security best practices, production checklist
• SECRETS_MANAGEMENT.md: AWS Secrets Manager and SSM Parameter Store integration patterns
• Added security warnings to hardcoded demo credentials in mysql/terragrunt.hcl
• GitHub Actions with minimal permissions (fixed CodeQL alerts)

CI/CD

• terraform-ci.yml: Validation, formatting, security scanning (tfsec, Checkov, gitleaks), LocalStack tests
• dependabot.yml: Automated dependency updates for GitHub Actions, Go modules, Docker
• .pre-commit-config.yaml: Local hooks for formatting, security, and validation
• .tflint.hcl: Terraform linting rules

Documentation

• DEPLOYMENT.md: Pre-deployment checklist, step-by-step guide, troubleshooting, cost optimization
• CONTRIBUTING.md: Coding standards, testing procedures, PR guidelines
• Enhanced README with badges, security sections, cost estimation
• terraform.tfvars.example: Configuration template
• LICENSE: MIT
• Enhanced module documentation (aws-data)

Example: Secrets Management

Before (hardcoded):

password = "CPqBueCwW6n7"

Recommended approach:

data "aws_secretsmanager_secret_version" "db_password" {
  secret_id = "magento/db/master-password"
}

password = jsondecode(data.aws_secretsmanager_secret_version.db_password.secret_string)["password"]

Stats

• 15 files modified/created
• 1,406 lines added
• 100% backward compatible
• 0 infrastructure changes

Original prompt

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