title: docker buildx disable parallel build for multiplatform
body: <p>I have a docker build that during the build needs to run the server for some admin configuration. By running the server it claims a port and during multi-platform build this conflicts with the <code>docker buildx</code> command as it claims that the port is already in use.</p>
  <p>Now I would like to run the build sequentially instead of in parallel but that does not seem to be an option?</p>
  <p>I've tried to make this work by setting the cpus  to 1 (<code>--cpuset-cpus 1</code>) but that does not seem to make a difference.</p>
  <pre><code>docker buildx build --platform=linux/amd64,linux/arm64/v8 --cpuset-cpus 1 --push -t ivonet/payara .
  </code></pre>
  <ul>
  <li>from git repo <a href="https://github.com/IvoNet/docker-payara" rel="nofollow noreferrer">https://github.com/IvoNet/docker-payara</a></li>
  <li>I'm working on an Apple M1 (aarch64)</li>
  </ul>
  <p>So is it possible to run this build with parallel disabled?</p>