title: Docker - Build Arg in Source File
body: <p>I'm trying to build a Docker container whose source tag I want to pass as a parameter.</p>
  
  <p>Build script:</p>
  
  <pre><code>docker build \
      --pull=true \
      ...
      --build-arg version=${version}
  </code></pre>
  
  <p>The Dockerfile:</p>
  
  <pre><code>ARG version
  
  FROM registry/repo:${version}
  </code></pre>
  
  <p>Running this gives me the error <code>Please provide a source image with</code>from<code>prior to commit</code>. </p>
  
  <p>Is there any way I can pass the version to pull as a build argument and use it? I'm on docker version <code>1.12</code></p>