feat: Add Dockerfile and initial Docker setup files

demo/routes/get_blocks_fix.py

@@ -0,0 +1,25 @@
+from flask import Blueprint, request, jsonify
+import json
+
+customizer_bp = Blueprint('customizer_api', __name__)
+
+@customizer_bp.route('/api/customizer/get-blocks/<int:site_id>', methods=['GET'])
+def get_blocks(site_id):
+    """Retorna los bloques de un sitio"""
+    import sqlite3
+    from config import MAIN_DB
+    
+    conn = sqlite3.connect(MAIN_DB)
+    c = conn.cursor()
+    c.execute('SELECT content_json FROM sites WHERE id = ?', (site_id,))
+    result = c.fetchone()
+    conn.close()
+    
+    if not result or not result[0]:
+        return jsonify([])
+    
+    try:
+        content = json.loads(result[0])
+        return jsonify(content.get('blocks', []))
+    except:
+        return jsonify([])