"DevTestClusterInstanceLaunchConfig" : {
      "Type" : "AWS::AutoScaling::LaunchConfiguration",
      "Properties" : {
        "IamInstanceProfile" : { "Fn::FindInMap" : [ "EnvMap", { "Ref" : "Environment" }, "IamInstanceProfile" ] },
        "ImageId":{ "Ref" : "ImageId" },
        "InstanceType" : { "Fn::FindInMap" : [ "EnvMap", { "Ref" : "Environment" }, "InstanceType" ] },
        "SecurityGroups" : { "Fn::FindInMap" : [ "EnvMap", { "Ref" : "Environment" }, "SecurityGroupIds" ] },
        "KeyName" : "some-awesome-key",
        "UserData" : {
          "Fn::Base64": {
            "Fn::Join": [
              "",
              [
                "#!/bin/bash -ex \n",
                "sudo yum update -y \n",
                "sudo yum install -y docker \n",
                "sudo service docker start"
              ]
            ]
          }
        }
      }
    },