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+# MinIO S3 Storage Setup for nuc-portal
+
+**Date:** 2026-02-06 20:00
+**Context:** Added S3-compatible storage for deployment preview screenshots
+
+---
+
+## MinIO Configuration
+
+### Access Details
+
+| Property | Value |
+|----------|-------|
+| **API Endpoint** | `http://192.168.1.3:9000` |
+| **Console** | `http://192.168.1.3:9001` |
+| **Root User** | `minioadmin` |
+| **Root Password** | `minioadmin` |
+
+### nuc-portal Service Account
+
+| Property | Value |
+|----------|-------|
+| **Access Key** | `nuc-portal` |
+| **Secret Key** | `YpVhIltqY6itWQXHWbEzJ82O9Qr3viR5` |
+| **Policy** | `readwrite` |
+| **Bucket** | `nuc-portal-previews` |
+
+---
+
+## Port Forwarder
+
+MinIO container wasn't exposed on host. Created port forwarder:
+
+```bash
+# Container: minio-port-fwd
+# Forwards: 9000 (API) and 9001 (Console)
+docker run -d --name minio-port-fwd \
+  --network xwowg8kswwsocssgocs8ss40 \
+  -p 9000:9000 \
+  -p 9001:9001 \
+  alpine/socat \
+  TCP-LISTEN:9000,fork,reuseaddr TCP-CONNECT:minio-xwowg8kswwsocssgocs8ss40:9000
+```
+
+---
+
+## Environment Variables
+
+Added to `/Users/agutierrez/Desktop/nuc/nuc-portal/.env.local`:
+
+```env
+# MinIO / S3 Storage (for deployment previews)
+S3_ENDPOINT=http://192.168.1.3:9000
+S3_ACCESS_KEY=nuc-portal
+S3_SECRET_KEY=YpVhIltqY6itWQXHWbEzJ82O9Qr3viR5
+S3_BUCKET=nuc-portal-previews
+S3_REGION=us-east-1
+```
+
+---
+
+## Files Created
+
+### `src/lib/s3.ts`
+
+S3 client helper with functions:
+
+| Function | Purpose |
+|----------|---------|
+| `uploadFile(key, body, contentType)` | Upload any file |
+| `uploadPreviewScreenshot(appUuid, deploymentUuid, buffer)` | Upload deployment preview |
+| `getPresignedUrl(key, expiresIn)` | Get signed URL for reading |
+| `getPreviewUrl(appUuid, deploymentUuid)` | Get preview presigned URL |
+| `fileExists(key)` | Check if file exists |
+| `previewExists(appUuid, deploymentUuid)` | Check if preview exists |
+| `deleteFile(key)` | Delete a file |
+| `getFile(key)` | Download file as Buffer |
+
+### `src/app/api/deployments/[uuid]/preview/route.ts`
+
+API endpoint that:
+- Checks if preview exists in S3
+- Returns presigned URL (valid 1 hour) if exists
+- Returns `{ exists: false }` with hint if not
+
+---
+
+## Dashboard Integration
+
+Updated `DeploymentDashboard.tsx`:
+- Added SWR hook for preview fetching
+- Shows loading spinner while fetching
+- Displays image if preview exists
+- Falls back to placeholder if not
+
+---
+
+## Storage Structure
+
+```
+nuc-portal-previews/
+└── previews/
+    └── {app-uuid}/
+        └── {deployment-uuid}.png
+```
+
+---
+
+## Dependencies Added
+
+```json
+{
+  "@aws-sdk/client-s3": "^3.x",
+  "@aws-sdk/s3-request-presigner": "^3.x"
+}
+```
+
+---
+
+## Next Steps
+
+To capture screenshots automatically:
+1. Add post-deployment hook in Coolify
+2. Use Playwright (`playwriter-nuc-01`) to take screenshot
+3. Upload to MinIO via `uploadPreviewScreenshot()`
+
+Manual capture example:
+```typescript
+// Using Playwright to capture screenshot
+const screenshot = await page.screenshot({ type: 'png' });
+await uploadPreviewScreenshot(appUuid, deploymentUuid, screenshot);
+```
+
+---
+
+## Verification
+
+```bash
+# Test MinIO health
+curl http://192.168.1.3:9000/minio/health/live
+
+# List buckets (via mc)
+ssh nuc 'docker run --rm --network host --entrypoint /bin/sh minio/mc -c "
+mc alias set m http://localhost:9000 nuc-portal YpVhIltqY6itWQXHWbEzJ82O9Qr3viR5
+mc ls m/
+"'
+
+# Test preview API
+curl http://localhost:3000/api/deployments/<uuid>/preview
+```
+
+---
+
+## Related
+
+- MinIO container: `minio-xwowg8kswwsocssgocs8ss40`
+- Port forwarder: `minio-port-fwd`
+- Implementation: `.artifacts/2026-02-06_19-30_deployment-dashboard-implementation.md`