task.json

    {
    "requiresCompatibilities": [
      "EC2"
    ],
    "family": "nextjs-336",
    "networkConfiguration": {
      "loadBalancers": [
        {
          "targetGroupArn": "ARN_OF_ELB",
          "containerName": "nextjs",
          "containerPort": 3000
        }
      ]
    },
    "containerDefinitions": [
      {
        "name": "nextjs",
        "image": "URL_OF_APPLICATION_IMAGE",
        "essential": true,
        "privileged": true,
        "portMappings": [
          {
            "containerPort": 3000,
            "hostPort": 3000
          }
        ]
      }
    ],
    "volumes": [],
    "memory": "3 GB",
    "cpu": "1 vCPU",
    "executionRoleArn": "ARN_OF_ROLE"
  }