在Beanstalk实例启动时，可以配置一个Nginx或Apache服务器以提供静态文件服务。以下是一个Python脚本示例，启动一个Nginx服务器：

container_commands:
  01-nginx-config:
    command: |
      service nginx stop
      rm /etc/nginx/nginx.conf
      cp .ebextensions/nginx.conf /etc/nginx/
      service nginx start
files:
  "/etc/nginx/nginx.conf":
    mode: "000644"
    owner: root
    group: root
    content: |
      user nginx;
      worker_processes auto;
      error_log /var/log/nginx/error.log;
      pid /var/run/nginx.pid;
      events {
          worker_connections 1024;
      }
      http {
          include /etc/nginx/mime.types;
          default_type application/octet-stream;
          log_format main '$remote_addr - $remote_user [$time_local] "$request" '
                            '$status $body_bytes_sent "$http_referer" '
                            '"$http_user_agent" "$http_x_forwarded_for"';
          access_log /var/log/nginx/access.log main;
          sendfile on;
          tcp_nopush on;
          keepalive_timeout 65;
          server {
              listen 80;
              server_name _;
              root /var/app/ondeck/static_files/;
              location / {
                  try_files $uri $uri/ /index.html;
              }
          }
      }

该示例将创建一个名为“nginx.conf”的文件，该文件作为一个容器信任的Nginx配置文件，从.ebextensions/nginx.conf复制到/etc/nginx目录。要求静态文件的目录为/var/app/ondeck/static_files/，并将Nginx配置为自动监听80端口。

然后可以将静态文件放置在/var/app/ondeck/static_files/目录中，例如index.html，然后就可以通过访问http://yourdomain.com/index.html来访问该文件了。