ecs.json

{
    "cluster": "${CLUSTER}",
    "serviceName": "${SERVICE}",
    "servicePort": 3000,
    "serviceProtocol": "none",
    "desiredCount": ${DESIRED_COUNT},
    "containers": [
      {
        "containerName": "${SERVICE}",
        "containerImage": "ast-viewer",
        "containerTag": "${CIRCLE_SHA1}",
        "containerPort": 3000,
        "memoryReservation": 350,
        "cpu": 64,
        "essential": true,
        "healthCheck": {
          "command": [
            "CMD-SHELL",
            "curl -f http://localhost:3000/ || exit 1"
          ],
          "interval": 10
        },
        "dockerLabels": {
          "com.datadoghq.ad.instances": "[{ \"name\": \"service_check\", \"url\": \"http://%%host%%:%%port%%/\", \"tags\": [\"service:${SERVICE}\"] }]",
          "com.datadoghq.ad.check_names": "[\"http_check\"]",
          "com.datadoghq.ad.init_configs": "[{}]"
        }
      }
    ]
  }