Angular CLI - create external CSS file from SASS

I have the following settings in angular-cli

"styles": [
        "styles.css","assets/scss/app.scss"
      ],

"defaults": {
    "styleExt": "scss",
    "component": {}
  }

      

        
        
        
      

    

the above compiles all SCSS to CSS and inserts into a tag <style>

on the page. How do I get the CLI to generate an external CSS file so I can do <link>

it?