title: yaml file configuration for multiple services in docker compose
body: <p>While I'm configuring my yaml it shows the error below:</p>
  
  <pre><code>version:'3.9'
  services:
  Web:
  image:nginx
  database:
  image:redis
  </code></pre>
  
  <blockquote>
    <p>ERROR: yaml.scanner.ScannerError: mapping values are not allowed here
      in ".\docker-compose.yml", line 2, column 9</p>
  </blockquote>