docs: Add Docker deployment instructions and build script

- Add build-and-push-docker.ps1 PowerShell script for automated Docker builds
- Update README.md with comprehensive Docker deployment guide
- Include environment variable configuration
- Document automated email scheduling in containers
- Add GitHub Container Registry push instructions

.gitignore

@@ -32,6 +32,9 @@ yarn-error.log*
 # local env files
 .env*.local
 
+# Firebase service account keys
+firebase-service-account.json
+
 # vercel
 .vercel
 

README.md

@@ -244,6 +244,62 @@ npm run build
 
 Deploy to Vercel or any platform supporting Next.js PWAs.
 
+## Docker Deployment
+
+The app includes Docker support for containerized deployment with automated email scheduling.
+
+### Build and Push Docker Image
+
+1. **Using the automated script (Windows):**
+   ```powershell
+   .\build-and-push-docker.ps1
+   ```
+   This script will:
+   - Build the Docker image
+   - Prompt for your GitHub Personal Access Token
+   - Login to GitHub Container Registry
+   - Push the image
+
+2. **Manual build and push:**
+   ```bash
+   # Build the image
+   docker build -t ghcr.io/nmemmert/prayer-app:latest .
+   
+   # Login to GitHub Container Registry
+   echo $GITHUB_TOKEN | docker login ghcr.io -u nmemmert --password-stdin
+   
+   # Push the image
+   docker push ghcr.io/nmemmert/prayer-app:latest
+   ```
+
+### Run with Docker Compose
+
+```bash
+docker-compose up -d
+```
+
+The container includes:
+- Automated email scheduling (runs every 5 minutes)
+- Health checks
+- Production-optimized Next.js build
+- Cron jobs for scheduled tasks
+
+### Environment Variables
+
+Set these environment variables for the container:
+
+```bash
+# Firebase Admin SDK (required for server-side operations)
+FIREBASE_PROJECT_ID=your_project_id
+FIREBASE_PRIVATE_KEY="-----BEGIN PRIVATE KEY-----\n..."
+FIREBASE_CLIENT_EMAIL=your_service_account_email
+
+# EmailJS (for client-side emails)
+NEXT_PUBLIC_EMAILJS_SERVICE_ID=your_service_id
+NEXT_PUBLIC_EMAILJS_TEMPLATE_ID=your_template_id
+NEXT_PUBLIC_EMAILJS_PUBLIC_KEY=your_public_key
+```
+
 ## Learn More
 
 To learn more about Next.js, take a look at the following resources:

build-and-push-docker.ps1

@@ -0,0 +1,32 @@
+# Docker Build and Push Script for Prayer App
+# Run this script to build and push the Docker container to GitHub Container Registry
+
+Write-Host "🔨 Building Docker image..." -ForegroundColor Green
+docker build -t ghcr.io/nmemmert/prayer-app:latest .
+
+if ($LASTEXITCODE -eq 0) {
+    Write-Host "✅ Docker image built successfully!" -ForegroundColor Green
+
+    Write-Host "🔐 Logging into GitHub Container Registry..." -ForegroundColor Yellow
+    Write-Host "Please enter your GitHub Personal Access Token (with package write permissions):" -ForegroundColor Yellow
+    $token = Read-Host -AsSecureString
+    $tokenPlain = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($token))
+
+    echo $tokenPlain | docker login ghcr.io -u nmemmert --password-stdin
+
+    if ($LASTEXITCODE -eq 0) {
+        Write-Host "🚀 Pushing Docker image to GitHub Container Registry..." -ForegroundColor Green
+        docker push ghcr.io/nmemmert/prayer-app:latest
+
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "✅ Docker image pushed successfully!" -ForegroundColor Green
+            Write-Host "🌐 Your container is now available at: ghcr.io/nmemmert/prayer-app:latest" -ForegroundColor Cyan
+        } else {
+            Write-Host "❌ Failed to push Docker image" -ForegroundColor Red
+        }
+    } else {
+        Write-Host "❌ Failed to login to GitHub Container Registry" -ForegroundColor Red
+    }
+} else {
+    Write-Host "❌ Failed to build Docker image" -ForegroundColor Red
+}