Packer template to illustrate issue with Docker and environment variables

template.json

{
    "builders": [{
        "type": "docker",
        "image": "centos:6",
        "commit": true
    }],
    "provisioners": [
        {
            "type": "shell",
            "inline": [
                "echo 'echo SUCCESS' > /root/test.sh",
                "chmod +x /root/test.sh",
                "echo 'export PATH=/root:$PATH' > /etc/profile.d/my_settings.sh",
                "echo 'PATH=/root:$PATH' > /etc/environment",
                "echo 'export PATH=/root:$PATH' > ~/.bashrc"
            ]
        }
    ],
    "post-processors": [
        [
            {
                "type": "docker-tag",
                "repository": "test-image",
                "tag": "1"
            }
        ]
    ]
}