alpine.json

{
  "builders": [
    {
      "boot_command": [
        "root<enter><wait>",
        "ifconfig eth0 up && udhcpc -i eth0<enter><wait5>",
        "wget http://{{ .HTTPIP }}:{{ .HTTPPort }}/answers<enter><wait>",
        "export ERASE_DISKS=/dev/sda<enter>",
        "export USEROPTS='-a -u -g audio,video,netdev {{user `ssh_username`}}'<enter>",
        "export USERSSHKEY='http://{{ .HTTPIP }}:{{ .HTTPPort }}/ssh.keys'<enter>",
        "setup-alpine -f $PWD/answers<enter><wait5>",
        "{{user `root_password`}}<enter><wait>",
        "{{user `root_password`}}<enter><wait30>",
        "mount /dev/sda3 /mnt<enter>",
        "echo 'PermitRootLogin yes' >> /mnt/etc/ssh/sshd_config<enter>",
        "umount /mnt; reboot<enter>"
      ],
      "boot_wait": "10s",
      "communicator": "ssh",
      "disk_size": "{{user `disk_size`}}",
      "format": "ova",
      "guest_additions_mode": "disable",
      "guest_os_type": "Linux26_64",
      "headless": false,
      "http_directory": "http",
      "iso_checksum": "{{user `iso_checksum_type`}}:{{user `iso_checksum`}}",
      "iso_urls": [
        "{{user `iso_local_url`}}",
        "{{user `iso_download_url`}}"
      ],
      "keep_registered": "false",
      "shutdown_command": "/sbin/poweroff",
      "ssh_password": "{{user `root_password`}}",
      "ssh_timeout": "10m",
      "ssh_username": "root",
      "type": "virtualbox-iso",
      "vboxmanage": [
        [
          "modifyvm",
          "{{.Name}}",
          "--memory",
          "{{user `memory`}}"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--cpus",
          "{{user `cpus`}}"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--rtcuseutc",
          "on"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--graphicscontroller",
          "vmsvga"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--vram",
          "9"
        ],
        [
          "modifyvm",
          "{{.Name}}",
          "--vrde",
          "off"
        ]
      ],
      "vm_name": "{{user `vm_name`}}"
    }
  ],
  "description": "Build base Alpine Linux x86_64",
  "provisioners": [
    {
      "inline": [
        "echo {{user `community_repo`}} >> /etc/apk/repositories",
        "apk update",
        "apk upgrade",
        "apk add virtualbox-guest-additions",
        "apk add sudo",
        "echo '127.0.0.1       alpine alpine.localdomain' >> /etc/hosts",
        "user={{user `ssh_username`}}",
        "echo Add user $user with NOPASSWD sudo",
        "echo $user 'ALL=(ALL) NOPASSWD: ALL' >> /etc/sudoers.d/$user",
        "chmod 0440 /etc/sudoers.d/$user",
        "echo '{{user `ssh_username`}}:{{user `ssh_password`}}' | chpasswd",
        "echo disable ssh root login",
        "sed '/PermitRootLogin yes/d' -i /etc/ssh/sshd_config"
      ],
      "type": "shell"
    }
  ],
  "variables": {
    "community_repo": "http://dl-cdn.alpinelinux.org/alpine/v3.16/community",
    "cpus": "1",
    "disk_size": "10240",
    "iso_checksum": "6c7cb998ec2c8925d5a1239410a4d224b771203f916a18f8015f31169dd767a2",
    "iso_checksum_type": "sha256",
    "iso_download_url": "https://dl-cdn.alpinelinux.org/alpine/v3.16/releases/x86_64/alpine-virt-3.16.2-x86_64.iso",
    "iso_local_url": "../../iso/alpine-virt-3.16.2-x86_64.iso",
    "memory": "1024",
    "root_password": "vagrant",
    "ssh_password": "vagrant",
    "ssh_username": "vagrant",
    "vm_name": "alpine-3.16.2-x86_64"
  }
}