# Deployment Capability Specification

## MODIFIED Requirements

### Requirement: Docker Multi-Stage Build for Production
The system SHALL package Next.js applications into production-ready Docker images using multi-stage builds with optimized Docker build pipeline integration.

#### Scenario: CI/CD Docker build with image size check
- **WHEN** CI/CD pipeline builds Docker image
- **THEN** build completes in two stages (build + runtime)
- **AND** final image size is ≤250MB
- **AND** if size exceeds limit, build fails with error message
- **AND** image is tagged with git commit SHA and version

#### Scenario: Health check validation in CI/CD
- **WHEN** Docker container starts after build
- **THEN** health check endpoint responds with 200 status
- **AND** CI/CD runs curl to verify health endpoint
- **AND** if health check fails, deployment is halted

### Requirement: CI/CD Pipeline Configuration
The system SHALL execute automated tests, build checks, and container registry operations in CI/CD pipeline.

#### Scenario: Pipeline triggers on code push
- **WHEN** code is pushed to main branch
- **THEN** CI/CD pipeline automatically initiates
- **AND** pipeline runs in <10 minutes
- **AND** pipeline steps execute in correct order (lint → test → build → push)

#### Scenario: Container registry push
- **WHEN** tests pass and image builds successfully
- **THEN** Docker image is pushed to container registry
- **AND** image is tagged with version and git commit
- **AND** registry confirms successful push

## ADDED Requirements

### Requirement: Environment Variable Management for Production
The system SHALL securely manage environment variables for production deployment, supporting different values for development, staging, and production environments.

#### Scenario: Production API URL configuration
- **WHEN** application starts in production mode
- **THEN** `NEXT_PUBLIC_API_URL` is set to production API endpoint
- **AND** value is loaded from deployment secret management
- **AND** application connects to correct API service

#### Scenario: Environment variable validation
- **WHEN** container starts without required environment variables
- **THEN** error is logged with missing variable names
- **AND** container exits with non-zero status
- **AND** deployment is marked as failed

### Requirement: Production Deployment Validation
The system SHALL validate successful deployment to staging and production environments with smoke tests and monitoring.

#### Scenario: Staging deployment health check
- **WHEN** application is deployed to staging
- **THEN** smoke tests execute automatically
- **AND** key user flows are validated (login, portfolio list, create)
- **AND** if any test fails, rollback is initiated

#### Scenario: Production deployment monitoring
- **WHEN** application is deployed to production
- **THEN** error tracking service begins monitoring
- **AND** Core Web Vitals are monitored for 48 hours
- **AND** if error rate exceeds threshold, alerting is triggered

### Requirement: Rollback & Failure Recovery
The system SHALL provide automated rollback capability if deployment or monitoring detects failures.

#### Scenario: Deployment rollback on test failure
- **WHEN** smoke tests fail after staging deployment
- **THEN** previous stable version is redeployed
- **AND** team is notified of rollback via Slack/email
- **AND** incident is logged for review

#### Scenario: Production monitoring-based rollback
- **WHEN** error rate exceeds 5% in production
- **THEN** alert is sent to on-call engineer
- **AND** automated rollback is offered (or manual decision)
- **AND** pre-deployment version is restored if needed