transmission.json

{
    "Transmission": {
        "description": "Open Source BitTorrent client",
        "volume_add_support": true,
        "ui": {
            "slug": ""
        },
        "version": "1.0",
        "website": "http://www.transmissionbt.com/",
        "containers": {
            "transmission": {
                "image": "dperson/transmission",
                "launch_order": 1,
                "ports": {
                    "51413": {
                        "description": "Port used to share the file being downloaded. You may need to open it (protocol: tcp and udp) on your firewall. Suggested default: 51413.",
                        "host_default": 51413,
                        "label": "Sharing port"
                    },
                    "9091": {
                        "description": "Transmission WebUI port. Suggested default: 9091",
                        "host_default": 9091,
                        "label": "WebUI port",
                        "protocol": "tcp",
                        "ui": true
                    }
                },
                "volumes": {
                    "/var/lib/transmission-daemon": {
                        "description": "Choose a Share where Transmission will save all of it's config and data files including your downloads. Eg: create a Share called transmission-data.",
                        "label": "Data Storage"
                    }
                },
                "environment": {
                    "TRUSER": {
                        "description": "Choose a login username for Transmission WebUI.",
                        "label": "WebUI username",
                        "index": 1
                    },
                    "TRPASSWD": {
                        "description": "Choose a login password for the Transmission WebUI.",
                        "label": "WebUI password",
                        "default": "admin",
                        "index": 2
		    },
		    "USERID": {
			"description": "Choose a UID to run transmission as.",
			"label": "UID",
			"index": 3
		    },
		    "GROUPID": {
			"description": "Choose a GID to run transmission as.",
			"label": "GID",
			"index": 4
                    }
                }
            }
        }
    }
}