title: AWS SAM: Build Failed Error: Docker is unreachable. Docker needs to be running to build inside a container
body: <p>Im running AWS SAM and using <code>sam build --use-container</code> then get the following error.</p>
  <p><code>Starting Build inside a container Building function 'SamTutorialFunction Build Failed Error: Docker is unreachable. Docker needs to be running to build inside a container</code></p>
  <p>I run <code>sudo service docker start</code> before and still get the same error.</p>