How to deploy as a group with marathon?

I am trying to deploy using redis postgre and latest gitlab version using the group json file of Marathon.

It is like Docker compose, it permit to execute Docker container from a rest API.

Does anyone has a working example? I followed the readme and wasn't able to make a working one.

  {
    "id": "/company/git",
    "groups": [
      {
        "id": "/company/git/database",
        "apps": [
          {
            "id": "/company/git/database/postgresql",
            "env": {
              "DB_NAME": "gitlabhq_production",
              "DB_USER": "gitlab",
              "DB_PASS": "password",
              "DB_EXTENSION": "pg_trgm",
              "SERVICE_4532_NAME": "postgresql",
              "SERVICE_4532_TAGS": "haproxy,haproxy_tcp=30690"
            },
            "constraints": [
              [
                "company",
                "CLUSTER",
                "company"
              ],
              [
                "hostname",
                "CLUSTER",
                "master-01"
              ]
            ],
            "container": {
              "type": "DOCKER",
              "docker": {
                "image": "sameersbn/postgresql:9.4-21",
                "network": "BRIDGE",
                "portMappings": [
                  {
                    "containerPort": 4532,
                    "protocol": "tcp"
                  }
                ]
              },
              "volumes": [
                {
                  "containerPath": "/var/lib/postgresql",
                  "hostPath": "/srv/company/gitlab/postgresql",
                  "mode": "RW"
                }
              ]
            }
          },
          {
            "id": "/company/git/database/redis",
            "env": {
              "SERVICE_6379_NAME": "redis",
              "SERVICE_6379_TAGS": "haproxy,haproxy_tcp=30691"
            },
            "constraints": [
              [
                "company",
                "CLUSTER",
                "company"
              ],
              [
                "hostname",
                "CLUSTER",
                "master-bhs-01"
              ]
            ],
            "container": {
              "type": "DOCKER",
              "docker": {
                "image": "sameersbn/redis:latest",
                "network": "BRIDGE",
                "portMappings": [
                  {
                    "containerPort": 6379,
                    "hostPort": 31690,
                    "protocol": "tcp"
                  }
                ]
              },
              "volumes": [
                {
                  "containerPath": "/var/lib/redis",
                  "hostPath": "/srv/company/gitlab/redis",
                  "mode": "RW"
                }
              ]
            },
            "healthChecks": [
              {
                "portIndex": 0,
                "protocol": "TCP",
                "gracePeriodSeconds": 30,
                "intervalSeconds": 10,
                "timeoutSeconds": 30,
                "maxConsecutiveFailures": 3
              }
            ]
          }
        ]
      },
      {
        "id": "/company/git/service",
        "dependencies": [
          "/company/git/database/database"
        ],
        "apps": [
          {
            "id": "/company/git/service/git",
            "env": {
              "GITLAB_PORT": "80",
              "GITLAB_SSH_PORT": "30693",
              "GITLAB_SECRET_DB_KEY_BASE": "zadzadza",
              "REDIS_HOST": "redis.service.companycloud.consul",
              "REDIS_PORT": "31690",
              "DB_HOST": "postgresql.service.companycloud.consul",
              "DB_PORT": "30691",
              "DB_NAME": "gitlabhq_production",
              "DB_USER": "gitlab",
              "DB_PASSWORD": "password",
              "DEBUG": "trye",
              "SERVICE_NAME": "gitlab",
              "SERVICE_80_TAGS": "gitlab,haproxy,webapp",
              "SERVICE_22_TAGS": "gitlab-ssh,haproxy,haproxy_tcp=30693"
            },
            "constraints": [
              [
                "company",
                "CLUSTER",
                "company"
              ],
              [
                "hostname",
                "CLUSTER",
                "master-bhs-01"
              ]
            ],
            "container": {
              "type": "DOCKER",
              "docker": {
                "image": "sameersbn/gitlab:8.7.6",
                "network": "BRIDGE",
                "portMappings": [
                  {
                    "containerPort": 80,
                    "hostPort": 31692,
                    "protocol": "tcp"
                  },
                  {
                    "containerPort": 22,
                    "hostPort": 31693,
                    "protocol": "tcp"
                  }
                ]
              },
              "volumes": [
                {
                  "containerPath": "/home/git/data",
                  "hostPath": "/srv/company/gitlab/gitlab",
                  "mode": "RW"
                }
              ]
            },
            "healthChecks": [
              {
                "portIndex": 0,
                "protocol": "TCP",
                "gracePeriodSeconds": 30,
                "intervalSeconds": 10,
                "timeoutSeconds": 30,
                "maxConsecutiveFailures": 3
              }
            ]
          }
        ]
      }
    ]
  }

Start with the README's Marathon deployment guidance and compare it with the supplied group JSON. Check how the PostgreSQL and Redis apps are connected to the GitLab app and validate the group deployment; done means a documented, working example is available.