aws ec2 request-spot-instances --spot-price "0.702" --instance-count 1 --availability-zone-group "eu-west-1a" --type "one-time" --valid-from "2018-03-06T01:00:00.000Z" --valid-until "2018-03-06T07:00:00.000Z" --launch-specification file://aws_detectron_spot_request.json


{
    "ImageId": "ami-70703009",
    "InstanceType": "g2.2xlarge",
    "KeyName": "nexoyoga-Ireland",
    "IamInstanceProfile": {
      "Arn": "arn:aws:iam::023988749392:instance-profile/yogapp"
    },
    "BlockDeviceMappings": [
      {
        "DeviceName": "/dev/sda1",
        "Ebs": {
          "DeleteOnTermination": true,
          "VolumeType": "gp2",
          "VolumeSize": 50,
          "SnapshotId": "snap-04038c8ead8b134e9"
        }
      }
    ],
    "NetworkInterfaces": [
      {
        "DeviceIndex": 0,
        "SubnetId": "subnet-69f38c31",
        "DeleteOnTermination": true,
        "Groups": [
          "sg-33e5b955"
        ],
        "AssociatePublicIpAddress": true
      }
    ],
    "Placement": {
        "Tenancy": "default"
    }
 }