title: Using environment variables from docker-compose.yml in Angular app
body: <p>I have <strong>enviroment.prod.ts</strong> file in my Angular app</p>
  
  <pre><code>export const environment = {
    backendUrl: '127.0.0.1:3000',
  };
  </code></pre>
  
  <p>And this is a part of <strong>docker-compose.prod.yml</strong>:</p>
  
  <pre><code>....
  environment:
        - ENV_BACKEND_URI=127.0.0.1:3000
  ....
  </code></pre>
  
  <p>How can I set <code>backendUrl</code> using <code>ENV_BACKEND_URI</code> from <strong>docker-compose.prod.yml</strong>?
  I want something like that:</p>
  
  <pre><code>export const environment = {
        backendUrl: '${ENV_BACKEND_URI}',
      };
  </code></pre>
  
  <p>Is this posible?</p>