Using Custom AMI in runner config

[ruchi1803]

I am using custom AMI based on ubuntu24 OS, but the runner is not registering on my github organisation. Below is the script I executed on my instance before creating the AMI.

`# 1. Update and install basic tools
sudo apt-get update && sudo apt-get upgrade -y
sudo apt-get install -y git jq unzip curl libicu-dev

2. Install AWS CLI v2

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"
unzip awscliv2.zip
sudo ./aws/install

3. Install Docker

sudo apt-get install -y docker.io
sudo systemctl enable docker
sudo usermod -aG docker ubuntu # Allow the runner to use docker without sudo

4. (Optional but Recommended) Pre-download the Runner Agent

This avoids the "Syncer" step at boot

mkdir actions-runner && cd actions-runner
curl -o actions-runner-linux-x64-2.333.1.tar.gz -L https://github.com/actions/runner/releases/download/v2.333.1/actions-runner-linux-x64-2.333.1.tar.gz
tar xzf ./actions-runner-linux-x64-2.333.1.tar.gz`

And here is my terraform code

provider "aws" {
  region = "us-east-1"
}

module "github-runner" {
  # Terraform downloads this automatically during 'terraform init'
  source  = "github-aws-runners/github-runner/aws"
  version = "7.6.0" # Use the version matching your downloaded zips

  aws_region = "us-east-1"
  vpc_id     = ""
  subnet_ids = []

  prefix = "gh-ci"

  github_app = {
    key_base64     = ""
    id             = ""
    webhook_secret = ""
  }

  # --- AMI Configuration ---
  ami = {
    owners = ["ACCID"] 
    filter = { name = ["CUSTOMAMI], state = ["available"] }
  }

  # --- Pre-baked Settings ---
  # 1. Disable the syncer lambda 
  enable_runner_binaries_syncer = false


  # 2. Disable the default userdata scripts that try to install Docker/Git
  # In 7.x, setting enable_userdata = false stops the module's default install scripts
  enable_userdata = false
  runner_as_root = false

  # --- Operational Mode ---
  instance_types              = ["t3.xlarge"]
  enable_organization_runners = true
  enable_ephemeral_runners = true

  # Runner custom label
  runner_extra_labels = ["aws-ephemeral"]
  
  # Pointing to the files you manually placed in the folder
  webhook_lambda_zip                = abspath("${path.root}/lambdas-download/webhook.zip")
  runner_binaries_syncer_lambda_zip = abspath("${path.root}/lambdas-download/runner-binaries-syncer.zip")
  runners_lambda_zip                = abspath("${path.root}/lambdas-download/runners.zip")
}

Is there anything that I am missing here in the configuration.
Even if I don't use custom AMI the runner gets created intermittently.

There is no issue on lambda side lambda is doing its job and launching the instance based on webhook, but post that whatever script suppose to execute, its not happening.