title: how to resolve the docker-compose up command execution
body: <p>I am trying to test this project <a href="https://github.com/saan099/sawtooth-test" rel="noreferrer">https://github.com/saan099/sawtooth-test</a> </p>
  
  <p>But while executing <code>docker-compose up</code> command I found this problem: </p>
  
  <pre><code>ERROR: Version in "./docker-compose.yaml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a version of "2" (or "2.0") and place your service definitions under the `services` key, or omit the `version` key and place your service definitions at the root of the file to use version 1.
  For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/
  </code></pre>
  
  <p>I have tried to change with another version but I still have the same problem. I would be very grateful please if you could help me please. </p>
  
  <p>Those are my docker version and my docker-composer version:</p>
  
  <pre><code>&gt;&gt;&gt; ~/sawtooth-test $ docker --version
  Docker version 1.13.1, build 092cba3
  
  &gt;&gt;&gt; ~/sawtooth-test $ docker-compose version
  docker-compose version 1.8.0, build unknown
  docker-py version: 1.9.0
  CPython version: 2.7.12
  OpenSSL version: OpenSSL 1.0.2g  1 Mar 2016
  </code></pre>
  
  <p>But when I put this docker-compose --version</p>
  
  <pre><code>   &gt;&gt;&gt; ~/sawtooth-test $ docker version
      Client:
      Version:      1.13.1
      API version:  1.26
      Go version:   go1.6.2
      Git commit:   092cba3
      Built:        Thu Nov  2 20:40:23 2017
      OS/Arch:      linux/amd64
  
  &gt;&gt;&gt; ~/sawtooth-test $ docker-compose --version
  docker-compose version 1.8.0, build unknown
  </code></pre>
  
  <p>Thank you in advance. </p>