Add Docker deployment for ZimaOS

- Updated Dockerfile for local storage deployment (removed Firebase dependencies)
- Created docker-compose.yml with persistent data volumes
- Added deploy.sh script for automated deployment
- Created DEPLOYMENT.md with ZimaOS deployment guide
- Added .env.example for configuration template
- Updated .gitignore to protect sensitive data
- Fixed package.json to use port 7654 in production
- Cleared all test user data for fresh deployment
- Updated README with deployment section

DEPLOYMENT.md

@@ -0,0 +1,148 @@
+# Capsule Budget - ZimaOS Deployment Guide
+
+## Quick Deploy
+
+1. **Clone or upload this repository to your ZimaOS device**
+
+2. **Run the deployment script:**
+   ```bash
+   ./deploy.sh
+   ```
+
+   This will:
+   - Generate a secure encryption key
+   - Clear any test data
+   - Build the Docker image
+   - Start the container
+
+3. **Access Capsule:**
+   - Open browser to `http://your-zima-ip:7654`
+   - Create your account and start budgeting!
+
+## Manual Deployment
+
+If you prefer manual setup:
+
+1. **Create .env file:**
+   ```bash
+   cp .env.example .env
+   ```
+
+2. **Generate encryption key:**
+   ```bash
+   openssl rand -base64 32
+   ```
+   
+3. **Update .env with your key:**
+   ```bash
+   ENCRYPTION_KEY=your-generated-key-here
+   ```
+
+4. **Build and start:**
+   ```bash
+   docker-compose up -d
+   ```
+
+## ZimaOS Integration
+
+### Using ZimaOS Apps
+
+If ZimaOS supports custom apps:
+
+1. Navigate to Apps section
+2. Click "Add Custom App"
+3. Point to this directory
+4. Configure port: 7654
+
+### Using ZimaOS File Manager
+
+1. Upload project via web interface or SMB
+2. SSH into ZimaOS
+3. Navigate to project directory
+4. Run `./deploy.sh`
+
+## Data Persistence
+
+All user data is stored in `./data/` directory:
+- User credentials (hashed)
+- Budget data (encrypted with AES-GCM)
+- Transaction history
+
+**Backup Strategy:**
+```bash
+# Backup data
+cp -r data data-backup-$(date +%Y%m%d)
+
+# Or use ZimaOS snapshot feature
+```
+
+## Management Commands
+
+```bash
+# View logs
+docker-compose logs -f
+
+# Stop Capsule
+docker-compose stop
+
+# Restart Capsule
+docker-compose restart
+
+# Stop and remove container
+docker-compose down
+
+# Rebuild after updates
+docker-compose build --no-cache
+docker-compose up -d
+```
+
+## Updating Capsule
+
+```bash
+# Pull latest changes
+git pull
+
+# Rebuild and restart
+docker-compose down
+docker-compose build
+docker-compose up -d
+```
+
+Your data in `./data/` will persist across updates.
+
+## Security Notes
+
+- Change the default ENCRYPTION_KEY before first use
+- Keep your `.env` file secure and never commit it
+- Use ZimaOS firewall to restrict access if needed
+- Consider VPN-only access for additional security
+
+## Troubleshooting
+
+### Container won't start
+```bash
+# Check logs
+docker-compose logs
+
+# Verify .env file exists
+ls -la .env
+```
+
+### Port already in use
+Edit `docker-compose.yml` and change port mapping:
+```yaml
+ports:
+  - "8080:7654"  # Change 8080 to your preferred port
+```
+
+### Data not persisting
+Ensure `./data` directory has correct permissions:
+```bash
+chmod 755 data
+```
+
+## Support
+
+For issues or questions:
+- GitHub: https://github.com/nmemmert/budget
+- Check logs: `docker-compose logs -f`