Fix storage permissions: use named volume to avoid bind mount chown errors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

_docker/app/Dockerfile

@@ -52,9 +52,14 @@ RUN composer install \
       --no-autoloader \
       --prefer-dist
 
-RUN composer dump-autoload --no-scripts --optimize --classmap-authoritative && \
+RUN mkdir -p /var/www/storage/app/public \
+    /var/www/storage/framework/cache \
+    /var/www/storage/framework/sessions \
+    /var/www/storage/framework/views \
+    /var/www/storage/logs && \
+    composer dump-autoload --no-scripts --optimize --classmap-authoritative && \
     chown -R root:www-data /var/www && \
     chmod 755 -R /var/www && \
-    chmod -R 775 /var/www/bootstrap/cache
+    chmod -R 775 /var/www/storage /var/www/bootstrap/cache
 
 WORKDIR /var/www

docker-compose.yml

@@ -9,6 +9,7 @@ services:
     restart: always
     volumes:
       - ./:/var/www
+      - storage_data:/var/www/storage
     depends_on:
       - db
   web:
@@ -17,6 +18,7 @@ services:
     restart: always
     volumes:
       - ./:/var/www
+      - storage_data:/var/www/storage
       - ./_docker/nginx/conf.d:/etc/nginx/conf.d
     ports:
       - "8005:80"
@@ -37,3 +39,4 @@ services:
 
 volumes:
   postgres_data:
+  storage_data: