refactor: Move Astro to root, use PORT env (default 80), allow all hosts

- Move Astro files from dealplustech-astro/ to project root
- Update Dockerfile: PORT environment variable (default 80)
- Add vite.config.ts with allowedHosts: true
- Matches nixpacks behavior for Easypanel deployment
- No hardcoded ports or domains

DEPLOYMENT.md

@@ -0,0 +1,284 @@
+# 🚀 Easypanel Deployment Guide
+
+**Project:** Deal Plus Tech Astro Migration  
+**Deployment Target:** Easypanel (Docker-based)  
+**Build Command:** `npm run build`  
+**Output:** Static site served via `npm run preview`
+
+---
+
+## 📋 Prerequisites
+
+1. **Easypanel Account** - Access to Easypanel instance at `http://110.164.146.46:3000`
+2. **Git Repository** - Code pushed to Git (Gitea/GitHub/GitLab)
+3. **Domain** (optional) - Custom domain for production
+
+---
+
+## 🛠️ Deployment Steps
+
+### Option 1: Deploy from Git Repository (Recommended)
+
+#### Step 1: Connect Git Repository
+
+1. Login to Easypanel: `http://110.164.146.46:3000`
+2. Click **"New Project"** or select existing project
+3. Click **"New Service"** → **"Git Repository"**
+4. Connect your Git provider (Gitea, GitHub, GitLab)
+5. Select repository: `dealplustech/dealplustech-astro`
+6. Select branch: `main`
+
+#### Step 2: Configure Build Settings
+
+**Build Configuration:**
+- **Build Command:** `npm run build`
+- **Publish Directory:** `dist`
+- **Dockerfile:** (Leave empty - uses auto-detection)
+- **Node Version:** `20`
+
+**Environment Variables:**
+```bash
+NODE_ENV=production
+PORT=4321
+HOST=0.0.0.0
+```
+
+#### Step 3: Deploy
+
+1. Click **"Deploy"**
+2. Wait for build to complete (~2-3 minutes)
+3. Easypanel will automatically assign a URL (e.g., `dealplustech-astro.easypanel.app`)
+4. Test the deployment
+
+#### Step 4: Auto-Deploy (Optional)
+
+Enable auto-deploy on push:
+1. Go to Service Settings → **Git**
+2. Enable **"Auto Deploy"**
+3. Select branch: `main`
+
+Now every push to `main` will trigger automatic deployment!
+
+---
+
+### Option 2: Deploy with Dockerfile
+
+If you prefer using the provided Dockerfile:
+
+#### Step 1: Build Docker Image Locally
+
+```bash
+cd dealplustech-astro
+
+# Build Docker image
+docker build -t dealplustech-astro:latest .
+
+# Test locally
+docker run -p 4321:4321 dealplustech-astro:latest
+```
+
+Visit `http://localhost:4321` to test
+
+#### Step 2: Push to Container Registry
+
+```bash
+# Tag for your registry
+docker tag dealplustech-astro:latest your-registry.com/dealplustech-astro:latest
+
+# Push to registry
+docker push your-registry.com/dealplustech-astro:latest
+```
+
+#### Step 3: Deploy on Easypanel
+
+1. Login to Easypanel
+2. **New Service** → **"Docker Image"**
+3. Enter image URL: `your-registry.com/dealplustech-astro:latest`
+4. Configure port: `4321`
+5. Click **"Deploy"**
+
+---
+
+## 🔧 Configuration
+
+### Environment Variables
+
+| Variable | Value | Description |
+|----------|-------|-------------|
+| `NODE_ENV` | `production` | Production mode |
+| `PORT` | `4321` | Astro preview server port |
+| `HOST` | `0.0.0.0` | Listen on all interfaces |
+
+### Resource Allocation
+
+**Recommended Resources:**
+- **CPU:** 0.5 - 1 vCPU
+- **Memory:** 512MB - 1GB
+- **Storage:** 1GB (for logs and assets)
+
+### Custom Domain
+
+To add a custom domain:
+
+1. Go to Service Settings → **Domains**
+2. Click **"Add Domain"**
+3. Enter your domain: `dealplustech.co.th`
+4. Update DNS records:
+   ```
+   Type: CNAME
+   Name: www
+   Value: your-easypanel-url.easypanel.app
+   ```
+5. Enable SSL (Easypanel provides auto-SSL)
+
+---
+
+## 📊 Monitoring
+
+### Health Check
+
+The Dockerfile includes a health check endpoint:
+- **URL:** `http://your-domain:4321/`
+- **Expected:** HTTP 200 OK
+
+### Logs
+
+View logs in Easypanel:
+1. Select Service
+2. Click **"Logs"** tab
+3. Filter by date/time
+
+### Metrics
+
+Easypanel provides:
+- CPU usage
+- Memory usage
+- Network traffic
+- Request count
+
+---
+
+## 🔄 Update Deployment
+
+### Automatic Updates (Git Auto-Deploy)
+
+If auto-deploy is enabled:
+1. Push changes to `main` branch
+2. Easypanel automatically rebuilds
+3. New version deploys in ~2-3 minutes
+
+### Manual Updates
+
+1. Go to Service → **Deployments**
+2. Click **"Redeploy"**
+3. Select latest commit
+4. Click **"Deploy Now"**
+
+---
+
+## 🐛 Troubleshooting
+
+### Build Fails
+
+**Issue:** `npm run build` fails
+
+**Solution:**
+1. Check build logs in Easypanel
+2. Verify `package.json` scripts
+3. Test build locally: `npm run build`
+4. Check Node version (must be 20+)
+
+### 502 Bad Gateway
+
+**Issue:** Service returns 502 error
+
+**Solution:**
+1. Check if container is running
+2. Verify port is 4321
+3. Check health check endpoint
+4. Review container logs
+
+### Static Assets Not Loading
+
+**Issue:** Images/CSS return 404
+
+**Solution:**
+1. Verify `public/` folder is copied in Dockerfile
+2. Check asset paths in code
+3. Rebuild and redeploy
+
+---
+
+## 📝 Post-Deployment Checklist
+
+- [ ] Test homepage loads
+- [ ] Test product pages (6 products)
+- [ ] Test blog posts (3 posts)
+- [ ] Test mobile responsiveness
+- [ ] Verify FloatingContact buttons work
+- [ ] Test all navigation links
+- [ ] Check SEO metadata
+- [ ] Setup custom domain (if needed)
+- [ ] Enable SSL certificate
+- [ ] Configure CDN (optional)
+- [ ] Setup monitoring alerts
+
+---
+
+## 🎯 Production Optimization
+
+### Enable Compression
+
+Easypanel automatically enables gzip compression for static assets.
+
+### CDN Integration
+
+For better performance:
+
+1. Sign up for CDN (Cloudflare, BunnyCDN, etc.)
+2. Point CDN to Easypanel URL
+3. Update DNS to point to CDN
+4. Configure cache rules
+
+### Caching Headers
+
+Astro sets optimal cache headers by default:
+- **HTML:** No cache (always fresh)
+- **Assets:** 1 year (immutable)
+- **Images:** 1 year (immutable)
+
+---
+
+## 📞 Support
+
+**Easypanel Documentation:** https://docs.easypanel.io  
+**Astro Documentation:** https://docs.astro.build  
+**Project Repository:** [Your Git Repo]
+
+---
+
+## 🚀 Quick Deploy Commands
+
+```bash
+# Build locally
+npm run build
+
+# Test production build locally
+npm run preview
+
+# Build Docker image
+docker build -t dealplustech-astro:latest .
+
+# Run Docker container
+docker run -p 4321:4321 dealplustech-astro:latest
+
+# Push to registry
+docker push your-registry.com/dealplustech-astro:latest
+```
+
+---
+
+**Deployment Status:** ✅ Ready to Deploy  
+**Estimated Deploy Time:** 2-3 minutes  
+**First Deploy:** Manual  
+**Subsequent Deploys:** Automatic (if enabled)