build.json

{
  "variables": {
    "channel": null,
    "version": null,
    "s3_bucket": "",
    "iam_instance_profile": ""
  },
  "builders": [
    {
      "type" : "amazon-ebsvolume",
      "region" : "us-east-2",
      "instance_type" : "c5.18xlarge",
      "spot_price": "2.0",
      "block_duration_minutes": 60,
      "source_ami_filter": {
        "most_recent": true,
        "filters": {
          "name": "chromium-builder.*",
          "virtualization-type": "hvm",
          "root-device-type": "ebs"
        },
        "owners": ["self"]
      },
      "ebs_volumes": [
        {
          "device_name": "/dev/sda1",
          "volume_size": 100,
          "volume_type": "gp2",
          "delete_on_termination": true
        }
      ],
      "iam_instance_profile": "{{user `iam_instance_profile`}}",
      "ssh_username" : "ubuntu"
    }
  ],
  "provisioners": [
    {
      "type": "shell",
      "inline": [
        "mkdir -p ~/src",
        "mkdir -p ~/chromium/src/out/Headless",
        "sudo mount -t tmpfs -o size=20G,nr_inodes=40k,mode=1777 tmpfs ~/chromium/src/out/Headless"
      ]
    },
    {
      "type": "file",
      "source": "./src/",
      "destination": "~/src/"
    },
    {
      "type": "file",
      "source": "./args.gn",
      "destination": "~/chromium/src/out/Headless/"
    },
    {
      "type": "shell",
      "environment_vars": [
        "CR_CHANNEL={{user `channel`}}",
        "CR_VERSION={{user `version`}}",
        "S3_BUCKET={{user `s3_bucket`}}"
      ],
      "scripts": [
        "scripts/build.sh",
        "scripts/package.sh",
        "scripts/upload.sh"
      ]
    }
  ]
}