fix: 還原 compose.demo.yaml 的 port 映射為 80:80 + 8080:8080

Demo 主機的 Docker 沒有綁定特權端口 (80) 的權限，
將映射從 80:80 改為 8080:80（主機 8080 → 容器 Nginx 80）。

compose.yaml

@@ -6,8 +6,8 @@ services:
             args:
                 WWWGROUP: '${WWWGROUP}'
         image: 'sail-8.5/app'
-        container_name: star-erp-laravel
-        hostname: star-erp-laravel
+        container_name: laravel
+        hostname: laravel
         extra_hosts:
             - 'host.docker.internal:host-gateway'
         ports:
@@ -29,8 +29,8 @@ services:
             # - mailpit
     mysql:
         image: 'mysql/mysql-server:8.0'
-        container_name: star-erp-mysql
-        hostname: star-erp-mysql
+        container_name: mysql
+        hostname: mysql
         ports:
             - '${FORWARD_DB_PORT:-3306}:3306'
         environment:
@@ -56,8 +56,8 @@ services:
             timeout: 5s
     redis:
         image: 'redis:alpine'
-        container_name: star-erp-redis
-        hostname: star-erp-redis
+        container_name: redis
+        hostname: redis
         # ports:
         #     - '${FORWARD_REDIS_PORT:-6379}:6379'
         volumes: