I have the following terraform script:

# Configure the Google Cloud Provider
terraform {
  required_providers {
    google = {
      source  = "hashicorp/google"
      version = "~> 6.0"
    }
  }
}

# Define Variables
variable "project_id" {
  type = string
  default = "myProject"
}

variable "zone" {
  type = string
  default = "europe-central2-a"
}

variable "machine_type" {
  type = string
  default = "e2-small"
}

variable "network" {
  type = string
  default = "default"
}

variable "image" {
  type = string
  default = "cos-cloud/cos-73-11647-217-0"
}

variable "docker_image" {
  type = string
  default = "myusername/myProject:master"
}

provider "google" {
  project = "myProject"
}

module "startup-scripts" {
  source  = "terraform-google-modules/startup-scripts/google"
  version = "~> 2.0"

  enable_get_from_bucket   = true
  enable_setup_init_script = true
  enable_setup_sudoers = true
}


resource "google_compute_instance" "default" {
  name         = "myProject-vm"
  machine_type = var.machine_type
  zone         = var.zone

  boot_disk {
    initialize_params {
      image = var.image
    }
    auto_delete = true
  }

  network_interface {
    network = var.network
    access_config {}
  }

  # Metadata Startup Script to Install Docker and Start a Container
  metadata = {
    startup-script = module.startup-scripts.content
    startup-script-custom = file("${path.module}/startup-script.sh")

  }
}

and this is my startup-script.sh

#!/bin/bash
docker pull myUsername/myProject:master

# Run the Docker container
docker run -d myUsername/myProject:master

But once the vm is running, I don’t see any image running.

Any idea what am I doing wrong?