This past summer I spent some time learning Ansible.  I&#x27;ve written scripts for the configuration and the deployment of my application&#x27;s various services.  The built-in idempotency of the commands was a big win for me and I feel fairly productive using the tool now.<p>My only complaint with Ansible really has been that it feels slow at times.<p>I&#x27;m interested in checking out Docker.  What exactly does it buy me over my Ansible config&#x2F;deployment scripts?  Does it obsolete them?