title: when using docker compose 3.8 getting 'version is unsupported' error
body: <p>I'm trying to use the latest docker compose version 3.8 but I keep getting "Version in ".\docker-compose.yml" is unsupported." error.</p>
  
  <p>I'm using the latest version of Docker engine, 19.03.8 and Docker desktop, 2.2.0.5. </p>
  
  <p>EDIT:
  Here is my docker compose version: docker-compose version 1.25.4, build 8d51620a</p>
  
  <p>Here is my docker compose file:</p>
  
  <pre><code>version: "3.8"
  services:
    portal:
      image: portal-dev
      ports:
        - "5000:80"
        - "4200:4200"
      container_name: portal
      build:
        context: .
        dockerfile: Dockerfile.dev
      environment:
        ASPNETCORE_ENVIRONMENT: Development
        DOTNET_SYSTEM_NET_HTTP_USESOCKETSHTTPHANDLER: 0
  </code></pre>
  
  <p>My docker compose file works using version 3.7. I can't figure out why it doesn't work using version 3.8. Can anyone help?</p>