title: How to use gatsby-image with an image url?
body: <p>This is how the image is shown in index.js and it works . The imgUrl is basically an image url .</p>
  <pre><code>import React from 'react';
  import { graphql } from 'gatsby';
  
  export const query = graphql`
      {
          test {
              imgUrl
          }
      }
  `;
  
  export default function Home({ data }) {
      console.log(data);
      return (
          &lt;div&gt;
              Hello world!
              &lt;img src={data.test.imgUrl} /&gt;
          &lt;/div&gt;
      );
  }
  </code></pre>
  <p>I want to use gatsby image like this :</p>
  <pre><code>childImageSharp {
      fixed(width: 600) {
          ...GatsbyImageSharpFixed
      }
   }
  </code></pre>
  <p>But since it's not stored locally how can I use gatsby image with the url of an image ?</p>