{
    "builders": [
        {
            "type": "amazon-ebs",
            "ami_name": "moss-packer-whee",
            "instance_type": "t2.micro",
            "source_ami_filter": {
              "filters": {
                "virtualization-type": "hvm",
                "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*",
                "root-device-type": "ebs"
              },
              "owners": ["099720109477"],
              "most_recent": true
            },
            "ssh_username": "ubuntu"
        }
    ],
  "provisioners": [
    {
        "type": "shell-local",
        "inline": ["echo MOSS packer run uuid is '{{ build `PackerRunUUID`}}'"]
    },
    {
        "type": "shell",
        "inline": ["echo MOSS packer run uuid is '{{ build `PackerRunUUID`}}'"]
    }
  ]
}

    amazon-ebs: MOSS packer run uuid is b846cf06-1f1f-4b8f-885b-a7fc89d7290e
2020/03/12 17:16:01 [INFO] (telemetry) ending shell-local
2020/03/12 17:16:01 [INFO] (telemetry) Starting provisioner shell
==> amazon-ebs: Provisioning with shell script: /var/folders/2b/xs01fttd7cbdwpzbgnd1k7380000gp/T/packer-shell382721493
2020/03/12 17:16:01 packer-provisioner-shell plugin: Opening /var/folders/2b/xs01fttd7cbdwpzbgnd1k7380000gp/T/packer-shell382721493 for reading
2020/03/12 17:16:01 packer-provisioner-shell plugin: [INFO] 81 bytes written for 'uploadData'
2020/03/12 17:16:01 [INFO] 81 bytes written for 'uploadData'
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Opening new ssh session
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Starting remote scp process:  scp -vt /tmp
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Started SCP session, beginning transfers...
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Copying input data into temporary file so we can read the length
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] scp: Uploading script_5242.sh: perms=C0644 size=81
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] SCP session complete, closing stdin pipe.
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Waiting for SSH session to complete.
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] scp stderr (length 30): Sink: C0644 81 script_5242.sh
2020/03/12 17:16:01 packer-builder-amazon-ebs plugin: [DEBUG] Opening new ssh session
2020/03/12 17:16:02 packer-builder-amazon-ebs plugin: [DEBUG] starting remote command: chmod 0755 /tmp/script_5242.sh
2020/03/12 17:16:02 packer-builder-amazon-ebs plugin: [INFO] RPC endpoint: Communicator ended with: 0
2020/03/12 17:16:02 [INFO] RPC client: Communicator ended with: 0
2020/03/12 17:16:02 [INFO] RPC endpoint: Communicator ended with: 0
2020/03/12 17:16:02 packer-provisioner-shell plugin: [INFO] RPC client: Communicator ended with: 0
2020/03/12 17:16:02 packer-builder-amazon-ebs plugin: [DEBUG] Opening new ssh session
2020/03/12 17:16:02 packer-builder-amazon-ebs plugin: [DEBUG] starting remote command: chmod +x /tmp/script_5242.sh; PACKER_BUILDER_TYPE='amazon-ebs' PACKER_BUILD_NAME='amazon-ebs'  /tmp/script_5242.sh
2020/03/12 17:16:02 packer-builder-amazon-ebs plugin: [INFO] RPC endpoint: Communicator ended with: 0
2020/03/12 17:16:02 [INFO] 61 bytes written for 'stdout'
2020/03/12 17:16:02 [INFO] 0 bytes written for 'stderr'
2020/03/12 17:16:02 [INFO] RPC client: Communicator ended with: 0
2020/03/12 17:16:02 [INFO] RPC endpoint: Communicator ended with: 0
    amazon-ebs: MOSS packer run uuid is b846cf06-1f1f-4b8f-885b-a7fc89d7290e

PACKER_ACC=1 go test ./provisioner/shell/provisioner_acc_test.go -v -timeout=45m
=== RUN   TestBuildShellProvisionerWithBuildVariablesSharing
2020/03/13 17:42:24 ui: amazon-ebs: output will be in this color.
2020/03/13 17:42:24 ui:
2020/03/13 17:42:24 Build debug mode: false
2020/03/13 17:42:24 Force build: false
2020/03/13 17:42:24 On error:
2020/03/13 17:42:24 Preparing build: amazon-ebs
2020/03/13 17:42:24 Waiting on builds to complete...
2020/03/13 17:42:24 Starting build run: amazon-ebs
2020/03/13 17:42:24 Running builder: amazon-ebs
...

go test ./provisioner/shell/provisioner_acc_test.go -v -timeout=45m
=== RUN   TestBuildShellProvisionerWithBuildVariablesSharing
--- SKIP: TestBuildShellProvisionerWithBuildVariablesSharing (0.00s)
    core.go:76: Acceptance tests skipped unless env 'PACKER_ACC' set
PASS
ok  	command-line-arguments	0.562s