title: How are Packer and Docker different? Which one should I prefer when provisioning images?
body: <p>How are <a href="https://packer.io" rel="noreferrer">Packer</a> and <a href="https://docker.com" rel="noreferrer">Docker</a> different? Which one is easier/quickest to provision/maintain and why? What is the pros and cons of having a <code>dockerfile</code>?</p>