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

docker-compose.yml

@@ -1,15 +1,21 @@
 version: '3.8'
 
 services:
-  budget-app:
-    image: ghcr.io/nmemmert/budget:dbaff55
+  capsule:
+    build: .
+    container_name: capsule-budget
     ports:
-      - "3000:3000"
+      - "7654:7654"
+    volumes:
+      # Persist user data outside container
+      - ./data:/app/data
     environment:
       - NODE_ENV=production
+      # Generate a secure key: openssl rand -base64 32
+      - ENCRYPTION_KEY=${ENCRYPTION_KEY:-change-this-to-a-secure-key}
     restart: unless-stopped
     healthcheck:
-      test: ["CMD", "curl", "-f", "http://localhost:3000"]
+      test: ["CMD", "wget", "--quiet", "--tries=1", "--spider", "http://localhost:7654"]
       interval: 30s
       timeout: 10s
       retries: 3