instruction: Create a Dockerfile for configuration
output: ```dockerfile
  from Docker.
  
  $ docker service rm redis
  
  $ docker secret rm my_secret_data
  Simple example: Use secrets in a Windows serviceThis is a very simple example which shows how to use secrets with a Microsoft
  IIS service running on Docker for Windows running Windows containers on
  Microsoft Windows 10. It is a naive example that stores the webpage in a secret.This example assumes that you have PowerShell installed.Save the following into a new file index.html.
  
  <html lang="en">
   <head><title>Hello Docker</title></head>
   <body>
   <p>Hello Docker! You have deployed a HTML page.</p>
   </body>
  </html>If you have not already done so, initialize or join the swarm.
  
  > docker swarm init
  Save the index.html file as a swarm secret named homepage.
  
  > docker secret create homepage index.html
  Create an IIS service and grant it access to the homepage secret.
  
  > docker service create `
   --name my-iis `
   --publish published=8000,target=8000 `
   --secret src=homepage,target="\inetpub\wwwroot\index.html" `
   microsoft/iis:nanoserver
  
  NoteThere is technically no reason to use secrets for this
  example; configs are a better fit. This example is
  for illustration only.Access the IIS service at http://localhost:8000/. It should serve
  the HTML content
  ```