Packer template to build aws ami

cloud-config.yml

package_update: true
package_upgrade: true
groups:
  - docker
users:
  - name: ubuntu
    groups: docker
  - name: telegraf
    groups: docker
cloud_config_modules:
  - locale
  - runcmd
packages:
  - apt-transport-https
  - ca-certificates
  - curl
  - gnupg
  - gnupg-agent
  - lsb-release
  - software-properties-common
  - unattended-upgrades
  - curl
write_files:
  - content: |
      #!/bin/bash
      # Setup directories and files
      set -x
      set -e
      mkdir -p /home/ubuntu/docker-stack/configs
      mkdir -p /home/ubuntu/docker-stack/chainspec
    path: /tmp/create_directories.sh
    permissions: "0755"
  - content: |
      #!/bin/bash
      set -x
      set -e
      # Install docker & docker-compose
      mkdir -m 0755 -p /etc/apt/keyrings
      curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /etc/apt/keyrings/docker.gpg
      echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu \
          $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
      apt update -y
      apt install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin -y
    path: /tmp/install_docker.sh
    permissions: "0755"
  - content: |
      #!/bin/sh
      echo PubkeyAcceptedKeyTypes=+ssh-rsa >> /etc/ssh/sshd_config;
      service ssh reload
    path: /tmp/configure_ssh.sh
    permissions: "0755"
runcmd:
  - [ /bin/update-crypto-policies, --set, LEGACY ]
  # - sh /tmp/configure_ssh.sh
  - sh /tmp/create_directories.sh
  - sh /tmp/install_docker.sh

image.pkr.hcl

source "amazon-ebs" "aws-ami" {
  ami_name                     = "aws-ami-01"
  instance_type                = "t2.micro"
  ssh_username                 = "ubuntu"
  region                       = "us-west-1"
  temporary_key_pair_type      = "ed25519"
  user_data_file               = "../scripts/cloud-config.yml"
  source_ami_filter {
    filters = {
      name                = "ubuntu/images/hvm-ssd/ubuntu-jammy-22.04-amd64-server-*"
      root-device-type    = "ebs"
      virtualization-type = "hvm"
      architecture        = "x86_64"
    }
    most_recent = true
    owners      = ["099720109477"]
  }
  ami_block_device_mappings {
    device_name = "/dev/sda1"
    volume_size = "60"
    volume_type = "gp2"
  }

  tags = {
    Env       = "prod"
    Name      = "AMI-xxxx"
    packer    = "true"
  }
}

# a build block invokes sources and runs provisioning steps on them.
build {
  sources = ["source.amazon-ebs.aws-ami"] 
}