An example of a Nextflow Packer file in JSON

packer-nextflow.json

{
  "builders": [
    {
      "access_key": "{{user `aws_access_key`}}",
      "ami_name": "{{user `base_ami_name`}}",
      "region": "eu-west-1",
      "ssh_username": "{{user `aws_user`}}",
      "type": "amazon-ebs",
      "source_ami": "ami-e4515e0e",
      "secret_key": "{{user `aws_secret_key`}}",
      "ami_description": "{{user `description`}}",
      "name": "{{user `our_name`}} Ireland",
      "instance_type": "{{user `aws_i_type`}}"
    }
  ],
  "variables": {
    "our_name": "Nextflow Base Image",
    "aws_secret_key": "{{env `TF_VAR_aws_secret_key`}}",
    "base_description": "My Image with Nextflow & Docker",
    "nextflow_dir": "../../nextflow",
    "aws_user": "ec2-user",
    "base_ami_name": "Nextflow",
    "aws_i_type": "t2.micro",
    "aws_access_key": "{{env `TF_VAR_aws_access_key`}}"
  },
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "sudo yum update -y",
        "sudo yum install -y cloud-init docker nfs-utils git",
        "sudo service docker start",
        "sudo usermod -a -G docker ec2-user",
        "sudo yum install -y java-1.8.0",
        "sudo yum remove -y java-1.7.0-openjdk",
        "sudo wget -qO- https://get.nextflow.io | bash"
      ]
    }
  ]
}