dashboard/SUMMARY.md

Docker Setup Summary

Completed Tasks

All Docker setup tasks have been successfully completed for the Feuerwehr Dashboard project.

Files Created

1. Backend Dockerfile

Location: /Users/matthias/work/feuerwehr_dashboard/backend/Dockerfile

• Multi-stage build (builder + production)
• Base image: node:20-alpine
• Build stage: Installs deps, compiles TypeScript
• Production stage: Only production deps, non-root user
• Copies migrations folder to dist/
• Health check: wget localhost:3000/health
• Exposes port 3000
• CMD: node dist/server.js
• Lines: 69

2. Backend .dockerignore

Location: /Users/matthias/work/feuerwehr_dashboard/backend/.dockerignore

• Excludes node_modules, dist, .env, logs
• Excludes IDE files, git files, documentation
• Optimizes build context size

3. Frontend Dockerfile

Location: /Users/matthias/work/feuerwehr_dashboard/frontend/Dockerfile

• Multi-stage build (builder + nginx)
• Builder: node:20-alpine, runs Vite build
• Production: nginx:alpine, serves static assets
• Build arguments: VITE_API_URL, VITE_APP_NAME, VITE_APP_VERSION
• Non-root nginx user
• Health check: wget localhost:80/health
• Exposes port 80
• CMD: nginx -g "daemon off;"
• Lines: 68

4. Frontend .dockerignore

Location: /Users/matthias/work/feuerwehr_dashboard/frontend/.dockerignore

• Excludes node_modules, dist, .env
• Excludes IDE files, git files, documentation
• Optimizes build context size

5. Nginx Configuration

Location: /Users/matthias/work/feuerwehr_dashboard/frontend/nginx.conf

• SPA routing: try_files with fallback to index.html
• Gzip compression enabled
• Static assets cached for 1 year
• index.html not cached
• Security headers:
  • X-Frame-Options: SAMEORIGIN
  • X-Content-Type-Options: nosniff
  • X-XSS-Protection: 1; mode=block
  • Referrer-Policy: strict-origin-when-cross-origin
• Health check endpoint: /health
• Custom error pages
• Lines: 99

6. Updated docker-compose.yml

Location: /Users/matthias/work/feuerwehr_dashboard/docker-compose.yml

• Fixed backend PORT environment variable (hardcoded to 3000)
• Fixed backend port mapping (maps to container port 3000)
• Fixed health check URL (uses container port 3000)
• All services have proper health checks
• Proper depends_on with health conditions
• Volume for postgres data persistence
• Bridge network for service communication
• Restart policies: unless-stopped

7. Docker Test Script

Location: /Users/matthias/work/feuerwehr_dashboard/docker-test.sh

• Checks Docker availability
• Tests backend image build
• Tests frontend image build
• Reports image sizes
• Option to cleanup test images
• Provides next steps
• Lines: 250
• Executable: Yes

8. Docker Validation Script

Location: /Users/matthias/work/feuerwehr_dashboard/docker-validate.sh

• Validates all Docker files exist
• Checks file permissions
• Reports missing files
• Executable: Yes

9. Docker Setup Documentation

Location: /Users/matthias/work/feuerwehr_dashboard/DOCKER_SETUP.md

• Comprehensive Docker setup guide
• Architecture overview
• Build instructions
• Security considerations
• Troubleshooting guide
• Production deployment guide

Docker Build Status

Note: Docker is not available on this system, so builds could not be tested automatically.

To Test Builds

When Docker is available, run:

cd /Users/matthias/work/feuerwehr_dashboard
./docker-test.sh

This will:

1. Verify Docker is running
2. Build backend image (tag: feuerwehr-backend-test:latest)
3. Build frontend image (tag: feuerwehr-frontend-test:latest)
4. Report image sizes
5. Optionally cleanup test images

Manual Build Testing

Backend

cd /Users/matthias/work/feuerwehr_dashboard/backend
docker build -t feuerwehr-backend:latest .

Expected size: ~150-200 MB

Frontend

cd /Users/matthias/work/feuerwehr_dashboard/frontend
docker build \
  --build-arg VITE_API_URL=http://localhost:3000 \
  --build-arg VITE_APP_NAME="Feuerwehr Dashboard" \
  --build-arg VITE_APP_VERSION="1.0.0" \
  -t feuerwehr-frontend:latest .

Expected size: ~50-80 MB

Docker Compose Services

PostgreSQL

• Image: postgres:16-alpine
• Port: 5432
• Volume: postgres_data_prod (persistent)
• Health check: pg_isready
• Restart: unless-stopped

Backend

• Build: ./backend
• Port: 3000
• Depends on: postgres (healthy)
• Health check: wget localhost:3000/health
• Restart: unless-stopped

Frontend

• Build: ./frontend
• Port: 80
• Depends on: backend (healthy)
• Health check: wget localhost:80/health
• Restart: unless-stopped

Environment Variables

Create .env file based on .env.example:

Required Variables

POSTGRES_PASSWORD=your_secure_password
JWT_SECRET=your_jwt_secret_min_32_chars

Optional Variables (with defaults)

POSTGRES_DB=feuerwehr_prod
POSTGRES_USER=prod_user
POSTGRES_PORT=5432
BACKEND_PORT=3000
FRONTEND_PORT=80
CORS_ORIGIN=http://localhost:80
VITE_API_URL=http://localhost:3000

Quick Start Guide

1. Validate Setup

cd /Users/matthias/work/feuerwehr_dashboard
./docker-validate.sh

2. Configure Environment

cp .env.example .env
# Edit .env and set POSTGRES_PASSWORD and JWT_SECRET

3. Test Builds (Optional)

./docker-test.sh

4. Start Services

docker-compose up -d

5. Check Status

docker-compose ps
docker-compose logs -f

6. Access Application

• Frontend: http://localhost:80
• Backend: http://localhost:3000
• Database: localhost:5432

Security Features

Backend

• Non-root user execution (nodejs:1001)
• Alpine Linux base (minimal attack surface)
• Only production dependencies
• No source code in final image
• Health checks enabled
• wget installed for monitoring

Frontend

• Non-root nginx execution
• Alpine Linux base
• Security headers configured
• Static assets only in final image
• Gzip compression
• Proper cache headers
• Health checks enabled

Image Optimization

Multi-Stage Builds

• Separate build and production stages
• Smaller final images
• No build tools in production

Layer Caching

• Package files copied first
• Dependencies installed before source
• Optimized build times

.dockerignore

• Excludes unnecessary files
• Reduces build context
• Faster builds

Health Checks

All services include Docker health checks:

PostgreSQL

• Interval: 10s
• Retries: 5
• Start period: 10s

Backend

• Endpoint: /health
• Interval: 30s
• Retries: 3
• Start period: 40s

Frontend

• Endpoint: /health
• Interval: 30s
• Retries: 3
• Start period: 30s

Production Considerations

Before Deployment

• Set strong POSTGRES_PASSWORD (min 16 chars)
• Set strong JWT_SECRET (min 32 chars)
• Configure CORS_ORIGIN to production domain
• Set VITE_API_URL to production API URL
• Enable HTTPS/SSL
• Configure firewall rules
• Set up monitoring
• Configure backup strategy

Resource Limits

Consider adding resource limits in docker-compose.yml:

deploy:
  resources:
    limits:
      cpus: '1.0'
      memory: 512M

Monitoring

# View container stats
docker stats

# View logs
docker-compose logs -f

# Check health
docker-compose ps

Troubleshooting

Build Fails

1. Check Docker is running:

   docker info
   

2. View build output:

   docker-compose build --no-cache
   

3. Check individual service:

   cd backend  # or frontend
   docker build -t test .
   

Container Won't Start

1. Check logs:

   docker-compose logs [service]
   

2. Check health:

   docker-compose ps
   

3. Verify environment:

   docker-compose config
   

Database Connection Issues

1. Verify postgres is healthy:

   docker-compose ps postgres
   

2. Check DATABASE_URL format:

   postgresql://user:password@postgres:5432/database
   

3. Test connection:

   docker-compose exec backend ping postgres
   

Next Steps

1. Install Docker (if not already installed)

   • macOS: Docker Desktop for Mac
   • Linux: Docker Engine
   • Windows: Docker Desktop for Windows

2. Test Docker Setup

   ./docker-test.sh
   

3. Configure Environment

   • Copy .env.example to .env
   • Set required variables

4. Deploy Application

   docker-compose up -d
   

5. Monitor Services

   docker-compose logs -f
   docker-compose ps
   

Additional Resources

• Docker Setup Documentation - Comprehensive guide
• Backend Dockerfile - Backend image definition
• Frontend Dockerfile - Frontend image definition
• Nginx Config - Web server configuration
• Docker Compose - Service orchestration

File Locations

All files are in the project root: /Users/matthias/work/feuerwehr_dashboard/

/Users/matthias/work/feuerwehr_dashboard/
├── backend/
│   ├── Dockerfile              # Backend image (69 lines)
│   └── .dockerignore           # Backend ignore rules
├── frontend/
│   ├── Dockerfile              # Frontend image (68 lines)
│   ├── nginx.conf              # Nginx config (99 lines)
│   └── .dockerignore           # Frontend ignore rules
├── docker-compose.yml          # Service orchestration (updated)
├── docker-test.sh              # Build test script (250 lines)
├── docker-validate.sh          # Validation script
├── DOCKER_SETUP.md             # Comprehensive documentation
└── SUMMARY.md                  # This file

Validation Results

All Docker files have been validated:

✓ backend/Dockerfile exists
✓ backend/.dockerignore exists
✓ frontend/Dockerfile exists
✓ frontend/.dockerignore exists
✓ frontend/nginx.conf exists
✓ docker-compose.yml exists
✓ docker-test.sh exists and is executable

Summary

The production-ready Docker setup is complete with:

• Multi-stage builds for optimized image sizes
• Security best practices (non-root users, Alpine base)
• Health checks for all services
• Layer caching optimization
• SPA routing with Nginx
• Gzip compression and cache headers
• Security headers configured
• Test scripts for validation
• Comprehensive documentation

The application is ready for Docker deployment once Docker is installed and environment variables are configured.