title: How to download file from S3 into EC2 instance using packers to build custom AMI
body: <p>I am trying to create a custom AMI using packers.
  I want to install some specific software on the custom AMI and my setups are present in S3 bucket. But it seems there is no direct way to download S3 file in packers just like cfn-init.</p>
  
  <p>So is there any way to download file on EC2 instance using packers.</p>