Marathon + Zetta = <3

1.json

{
    "id": "zetta-hello", 
    "container": {
        "docker": {
            "image":"mdobson/zetta-docker",
            "network":"BRIDGE",
            "portMappings": [
              {
                "containerPort":3000,
                "hostPort": 0,
                "protocol":"tcp"
              }
            ]
          },
        "type": "DOCKER"
    },
    "healthChecks":[ 
    {
      "protocol":"HTTP",
      "portIndex": 0,
      "path": "/",
      "gracePeriodSeconds": 5,
      "intervalSeconds": 20,
      "maxConsecutiveFailures": 3  
    }],
    "env": {
      "NODE_PORT":"3000"
    },
    "cpus": 0.25,
    "mem": 128,
    "instances": 1,
    "ports": [0]
}