title: Docker build requires exactly 1 argument
body: <p>When I run this command on my gitlab pipeline </p>
  
  <pre><code>docker build --build-arg NPM_TOKEN=${NPM_TOKEN} --tag $REGISTRY_IMAGE/web-public:$CI_COMMIT_SHA --tag $REGISTRY_IMAGE/web-public:$CI_COMMIT_REF_NAME packages/web-public
  </code></pre>
  
  <p>it fails with</p>
  
  <blockquote>
    <p>build requires exactly 1 argument</p>
  </blockquote>
  
  <p>It looks to me like I am actually passing one argument, the path; <code>packages/web-public</code>. Flags are not arguments as far as I know.</p>
  
  <p>What am I missing here?</p>
  
  <p>This is the structure of my project </p>
  
  <p><a href="https://i.stack.imgur.com/KkVKq.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KkVKq.png" alt="enter image description here"></a></p>