fix(docker): correct port mapping and improve container startup

- Fix port mapping from 5001:5001 to 5001:5000 to match internal application port
- Add entrypoint script for proper database initialization and seeding
- Set PORT environment variable to 5000 for consistency
- Update Dockerfile to use entrypoint script with proper line ending handling

docker-compose.yml

@@ -2,17 +2,19 @@ version: '3.8'
 
 services:
   calorie-tracker:
+    build: ./calorie_tracker_app
     image: git.jpaleviado.site/kingjaypee12/calorie-tracker:latest
     container_name: calorie-tracker
     restart: unless-stopped
     ports:
-      - "5001:5001"
+      - "5001:5000"
     volumes:
       - ./data:/app/data
     environment:
       - DATABASE_URL=sqlite:////app/data/calorie_tracker.db
       - SECRET_KEY=change-this-secret-key-in-production
       - API_NINJAS_KEY=${API_NINJAS_KEY}
+      - PORT=5000
     networks:
       - casaos-net