Add database initialization on startup

Dockerfile

@@ -33,7 +33,10 @@ RUN pip install --no-cache-dir --upgrade pip && \
 COPY --chown=user . .
 
 # Create necessary directories with proper permissions
-RUN mkdir -p vector_db cache learning_paths
+RUN mkdir -p vector_db cache learning_paths instance
+
+# Make startup script executable
+RUN chmod +x start.sh
 
 # Hugging Face Spaces requires port 7860
 EXPOSE 7860
@@ -42,6 +45,7 @@ EXPOSE 7860
 ENV PORT=7860
 ENV FLASK_ENV=production
 ENV PYTHONUNBUFFERED=1
+ENV FLASK_APP=web_app:create_app
 
-# Run the Flask app with gunicorn
-CMD ["gunicorn", "run:app", "--bind", "0.0.0.0:7860", "--workers", "2", "--timeout", "120"]
+# Run the startup script (initializes DB then starts gunicorn)
+CMD ["bash", "start.sh"]

start.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+set -e
+
+echo "=== Starting AI Learning Path Generator ==="
+
+# Set Flask app for migrations
+export FLASK_APP=web_app:create_app
+
+# Initialize database if it doesn't exist
+echo "Initializing database..."
+python -c "
+from web_app import create_app
+from web_app.models import db
+
+app = create_app()
+with app.app_context():
+    db.create_all()
+    print('Database tables created successfully!')
+"
+
+echo "Starting gunicorn server..."
+exec gunicorn run:app --bind 0.0.0.0:7860 --workers 2 --timeout 120