diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index ff1e420..947557b 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.8'
-
 # Все файлы хранятся в /Volume1/DockerAppsData/mixapp/
 # YAML файл хранится в /Volume1/DockerYAML/mix/
 
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index 021a651..527478b 100755
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -149,11 +149,18 @@ EOF
 
 # Если manage.py не в текущей директории, но есть в подпапке myproject
 if [ ! -f "manage.py" ] && [ -d "myproject" ]; then
-    echo "Changing directory to myproject..."
-    cd myproject
-    # Устанавливаем PYTHONPATH чтобы Python мог найти модуль myproject
-    export PYTHONPATH=$(pwd):$PYTHONPATH
-    echo "PYTHONPATH set to: $PYTHONPATH"
+    # Пытаемся войти в директорию, перенаправляя ошибки в /dev/null
+    if cd myproject 2>/dev/null; then
+        echo "Changing directory to myproject..."
+        # Устанавливаем PYTHONPATH чтобы Python мог найти модуль myproject
+        export PYTHONPATH=$(pwd):$PYTHONPATH
+        echo "PYTHONPATH set to: $PYTHONPATH"
+    else
+        # Если не можем войти в директорию (проблема с правами), устанавливаем PYTHONPATH из текущей директории
+        echo "Warning: Cannot access myproject directory (permission denied). Setting PYTHONPATH to include myproject..."
+        export PYTHONPATH=/app/myproject:$PYTHONPATH
+        echo "PYTHONPATH set to: $PYTHONPATH"
+    fi
 fi
 
 case "$1" in
diff --git a/myproject/products/templates/products/product_detail.html b/myproject/products/templates/products/product_detail.html
index 5bd363f..b192704 100644
--- a/myproject/products/templates/products/product_detail.html
+++ b/myproject/products/templates/products/product_detail.html
@@ -187,7 +187,7 @@
                             <th>Себестоимость:</th>
                             <td>
                                 <strong class="fs-5">{{ product.cost_price }} руб.</strong>
-                                {% if product.cost_price_details.batches %}
+                                {% if cost_price_details.batches %}
                                     <button class="btn btn-sm btn-outline-info ms-2" type="button" data-bs-toggle="collapse" data-bs-target="#costDetails" aria-expanded="false" aria-controls="costDetails">
                                         <i class="bi bi-info-circle"></i> Детали расчета
                                     </button>
@@ -196,7 +196,7 @@
                                 {% endif %}
                             </td>
                         </tr>
-                        {% if product.cost_price_details.batches %}
+                        {% if cost_price_details.batches %}
                         <tr>
                             <td colspan="2">
                                 <div class="collapse" id="costDetails">
@@ -206,13 +206,13 @@
                                         <div class="row mb-3">
                                             <div class="col-md-6">
                                                 <div class="alert alert-info mb-0">
-                                                    <small><strong>Кешированная стоимость:</strong> {{ product.cost_price_details.cached_cost }} руб.</small>
+                                                    <small><strong>Кешированная стоимость:</strong> {{ cost_price_details.cached_cost }} руб.</small>
                                                 </div>
                                             </div>
                                             <div class="col-md-6">
-                                                <div class="alert alert-{% if product.cost_price_details.is_synced %}success{% else %}warning{% endif %} mb-0">
-                                                    <small><strong>Рассчитанная стоимость:</strong> {{ product.cost_price_details.calculated_cost }} руб.</small>
-                                                    {% if not product.cost_price_details.is_synced %}
+                                                <div class="alert alert-{% if cost_price_details.is_synced %}success{% else %}warning{% endif %} mb-0">
+                                                    <small><strong>Рассчитанная стоимость:</strong> {{ cost_price_details.calculated_cost }} руб.</small>
+                                                    {% if not cost_price_details.is_synced %}
                                                         <br><small class="text-danger">⚠ Требуется синхронизация!</small>
                                                     {% endif %}
                                                 </div>
@@ -231,7 +231,7 @@
                                                     </tr>
                                                 </thead>
                                                 <tbody>
-                                                    {% for batch in product.cost_price_details.batches %}
+                                                    {% for batch in cost_price_details.batches %}
                                                     <tr>
                                                         <td>{{ batch.warehouse_name }}</td>
                                                         <td class="text-end">{{ batch.quantity }}</td>
@@ -244,9 +244,9 @@
                                                 <tfoot class="table-secondary">
                                                     <tr>
                                                         <th>Итого:</th>
-                                                        <th class="text-end">{{ product.cost_price_details.total_quantity }}</th>
+                                                        <th class="text-end">{{ cost_price_details.total_quantity }}</th>
                                                         <th class="text-end" colspan="3">
-                                                            <strong>Средневзвешенная: {{ product.cost_price_details.calculated_cost }} руб.</strong>
+                                                            <strong>Средневзвешенная: {{ cost_price_details.calculated_cost }} руб.</strong>
                                                         </th>
                                                     </tr>
                                                 </tfoot>
diff --git a/myproject/products/views/product_views.py b/myproject/products/views/product_views.py
index 4ae9205..f59ded6 100644
--- a/myproject/products/views/product_views.py
+++ b/myproject/products/views/product_views.py
@@ -161,10 +161,14 @@ class ProductDetailView(LoginRequiredMixin, ManagerOwnerRequiredMixin, DetailVie
     context_object_name = 'product'
 
     def get_queryset(self):
-        # Предзагрузка фотографий и аннотация остатков
+        # Предзагрузка фотографий, категорий, тегов и аннотация остатков
         total_available = Coalesce(Sum('stocks__quantity_available'), Value(0), output_field=DecimalField())
         total_reserved = Coalesce(Sum('stocks__quantity_reserved'), Value(0), output_field=DecimalField())
-        return super().get_queryset().prefetch_related('photos').annotate(
+        return super().get_queryset().prefetch_related(
+            'photos',
+            'categories',
+            'tags'
+        ).annotate(
             total_available=total_available,
             total_reserved=total_reserved,
             total_free=total_available - total_reserved,
@@ -172,9 +176,16 @@ class ProductDetailView(LoginRequiredMixin, ManagerOwnerRequiredMixin, DetailVie
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)
-        # Добавляем фотографии товара в контекст
-        context['product_photos'] = self.object.photos.all().order_by('order', 'created_at')
-        context['photos_count'] = self.object.photos.count()
+        # Добавляем фотографии товара в контекст (используем уже загруженные через prefetch_related)
+        product_photos = list(self.object.photos.all())
+        product_photos.sort(key=lambda x: (x.order, x.created_at))
+        context['product_photos'] = product_photos
+        context['photos_count'] = len(product_photos)
+        
+        # Кешируем cost_price_details, чтобы не делать множественные запросы к БД
+        from ..services.cost_calculator import ProductCostCalculator
+        context['cost_price_details'] = ProductCostCalculator.get_cost_details(self.object)
+        
         return context
 
 
diff --git a/myproject/requirements.txt b/myproject/requirements.txt
index 1770512..a1f55f0 100644
--- a/myproject/requirements.txt
+++ b/myproject/requirements.txt
@@ -35,3 +35,4 @@ tzdata==2025.2
 Unidecode==1.4.0
 vine==5.1.0
 wcwidth==0.2.14
+gunicorn==21.2.0