refactor: 迁移根目录 docker/ 到 source/docker/，更新所有路径引用

- 将 docker/{nginx.conf,run.sh,zz-phprun.ini,zz-phpfpm.conf} 移动到 source/docker/
- 更新所有 Dockerfile 中 /var/www/html/docker/ -> /var/www/html/source/docker/
- 更新 stack.json managed_files 路径前缀
- 重组 stack 模式目录结构 docker/ -> source/docker/
- 更新 source/README.md 目录描述
- 更新 AdminUpdateServiceBase.php 可选文件前缀

source/stack/default/Dockerfile

@@ -25,10 +25,10 @@ VOLUME /var/www/html/storage
 # 暴露 Nginx 端口
 EXPOSE 8000
 
-RUN chmod +x /var/www/html/docker/run.sh
+RUN chmod +x /var/www/html/source/docker/run.sh
 
 # 启动 Nginx PHP 然后阻塞
-ENTRYPOINT ["/bin/bash", "/var/www/html/docker/run.sh"]
+ENTRYPOINT ["/bin/bash", "/var/www/html/source/docker/run.sh"]
 
 CMD ["server"]
 

source/stack/default/source/docker/run.sh

@@ -1,12 +1,12 @@
 #!/bin/bash
 
 # 将代码中的nginx复制到nginx配置文件中
-cp /var/www/html/docker/nginx.conf /etc/nginx/sites-available/default
+cp /var/www/html/source/docker/nginx.conf /etc/nginx/sites-available/default
 ln -s /etc/nginx/sites-available/default /etc/nginx/sites-enabled/default
 
 # 将代码中的php配置文件复制到php配置文件中
-cp /var/www/html/docker/zz-phprun.ini /usr/local/etc/php/conf.d
-cp /var/www/html/docker/zz-phpfpm.conf /usr/local/etc/php-fpm.d
+cp /var/www/html/source/docker/zz-phprun.ini /usr/local/etc/php/conf.d
+cp /var/www/html/source/docker/zz-phpfpm.conf /usr/local/etc/php-fpm.d
 
 
 # 设置目录权限，确保挂载卷后依然有效