{
    "comment": "Converting an image.",
    "kernel": {
        "version": ">=2.6.18",
        "name": "linux"
    },
    "os": {
       "name": "centos",
        "format": "tgz",
        "checksum": "d600c8653a59ea9698e9a9270a839d47",
		"note": "this os image = `docker pull centos:6` + `yum install ImageMagick`. Using yum is becuase ImageMagick is not relocatable.",
        "source": [
            "http://ccl.cse.nd.edu/research/data/hep-case-study/d600c8653a59ea9698e9a9270a839d47/centos-6.8-x86_64.tar.gz"
        ],
        "version": "6.8",
        "uncompressed_size": "309442560",
        "id": "d600c8653a59ea9698e9a9270a839d47",
        "size": "104707989"
    },
    "hardware": {
        "cores": "1",
        "disk": "2GB",
        "arch": "x86_64",
        "memory": "1GB"
    },
    "environ": {
        "PWD": "/tmp"
    },
    "output": {
       "dirs": [
            "/tmp"
        ]
    }
}