# LittleShop Docker Deployment Guide

## Overview
LittleShop is now fully containerized with Docker for easy deployment and management.

## Quick Start

### Local Development
```bash
# Build and run locally
./docker-build.sh

# Access the application
# http://localhost:5100
```

### Production Deployment (Hostinger VPS)
```bash
# Deploy to Hostinger VPS
./docker-deploy-hostinger.sh
```

## Architecture

### Container Configuration
- **Base Image**: .NET 9.0 ASP.NET Core runtime
- **Port**: 5000 (internal), mapped to 5100 (host localhost only)
- **User**: Non-root user for security
- **Health Check**: Built-in health monitoring

### Security Features
- ✅ Localhost-only binding (127.0.0.1:5100)
- ✅ Non-root container execution
- ✅ Minimal base image
- ✅ No unnecessary packages
- ✅ Environment variable configuration

## Configuration

### Environment Variables
Create a `.env` file from the template:
```bash
cp .env.production .env
```

Key configurations:
- `JWT_SECRET_KEY` - Authentication secret (pre-configured)
- `SILVERPAY_*` - Payment gateway settings (pre-configured)
- `ROYALMAIL_*` - Shipping integration (optional)
- `TELEBOT_*` - Bot integration (optional)

### Volumes
The application uses three persistent volumes:
- `littleshop_data` - SQLite database
- `littleshop_logs` - Application logs
- `littleshop_uploads` - User uploaded files

## Deployment Scripts

### docker-build.sh
Local build and run script with options:
```bash
# Build only
./docker-build.sh --build-only

# Build and push to registry
./docker-build.sh --push --registry your-registry.com

# Build and run (default)
./docker-build.sh
```

### docker-deploy-hostinger.sh
Automated deployment to Hostinger VPS:
1. Builds image locally
2. Saves as compressed tar
3. Transfers to server via SCP
4. Loads and runs on server
5. Verifies deployment

## Docker Commands

### Basic Operations
```bash
# Start containers
docker-compose up -d

# Stop containers
docker-compose down

# View logs
docker logs -f littleshop

# Restart container
docker-compose restart

# Shell access
docker exec -it littleshop /bin/bash
```

### Monitoring
```bash
# Check status
docker-compose ps

# View resource usage
docker stats littleshop

# Health check
curl http://localhost:5100/api/catalog/products
```

## Remote Access

### SSH Tunnel for Admin Access
```bash
ssh -i ~/.ssh/hostinger_key -p 2255 -L 5100:127.0.0.1:5100 root@srv1002428.hstgr.cloud
# Then access: http://localhost:5100/Admin
```

### Direct Server Commands
```bash
# Connect to server
ssh -i ~/.ssh/hostinger_key -p 2255 root@srv1002428.hstgr.cloud

# Navigate to app directory
cd /opt/docker/littleshop

# View logs
docker logs -f littleshop

# Restart
docker-compose restart
```

## Nginx Integration (Optional)

To expose the application externally through nginx:

1. Create nginx configuration:
```nginx
server {
    listen 80;
    server_name srv1002428.hstgr.cloud;

    location / {
        proxy_pass http://127.0.0.1:5100;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection keep-alive;
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_set_header X-Forwarded-Proto $scheme;
    }
}
```

2. Enable and reload nginx:
```bash
ln -s /etc/nginx/sites-available/littleshop /etc/nginx/sites-enabled/
nginx -t
systemctl reload nginx
```

## Backup and Restore

### Backup Database
```bash
# On server
docker exec littleshop sqlite3 /app/data/littleshop-production.db ".backup /app/data/backup.db"
docker cp littleshop:/app/data/backup.db ./littleshop-backup-$(date +%Y%m%d).db
```

### Restore Database
```bash
# Stop container
docker-compose down

# Copy backup
docker cp ./littleshop-backup.db littleshop:/app/data/littleshop-production.db

# Start container
docker-compose up -d
```

## Troubleshooting

### Container Won't Start
```bash
# Check logs
docker logs littleshop

# Check docker-compose logs
docker-compose logs

# Verify image
docker images | grep littleshop
```

### Port Already in Use
```bash
# Check what's using port 5100
ss -tulpn | grep :5100

# Change port in docker-compose.yml
# ports:
#   - "127.0.0.1:5200:5000"
```

### Database Issues
```bash
# Reset database
docker exec littleshop rm /app/data/littleshop-production.db
docker-compose restart
```

### Permission Issues
```bash
# Fix volume permissions
docker exec -u root littleshop chown -R $APP_UID:$APP_UID /app/data /app/logs /app/uploads
```

## Updates

To update the application:

1. Pull latest code
```bash
git pull
```

2. Rebuild and deploy
```bash
./docker-deploy-hostinger.sh
```

The script handles:
- Building new image
- Backing up data (recommended to do manually)
- Deploying new version
- Health check verification

## Security Notes

1. **Credentials**: All sensitive credentials are in `.env` file
2. **Network**: Container bound to localhost only by default
3. **Updates**: Regularly update base images for security patches
4. **Logs**: Rotate logs to prevent disk space issues

## Support

- Application logs: `/opt/docker/littleshop/logs/`
- Docker logs: `docker logs littleshop`
- Container shell: `docker exec -it littleshop /bin/bash`

## Admin Access

- URL: http://localhost:5100/Admin
- Username: admin
- Password: admin

Remember to change the admin password after first login!