autologin

{
  "ignition": {
    "version": "3.1.0"
  },
  "passwd": {
    "users": [
      {
        "name": "core",
        "sshAuthorizedKeys": [
          "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQCRvfOoVVuVw0+Pjv2wMYhr0h2J9LAc2ptz9ghsZXe1beTgYeJrH3ZezEdXLxZsAmgZAgwlf191K74idSJbM+8HhJAFPf5rQcB2EZzwXtwANCMGVnezavtJJlwZsr8+l9Y2xfKQ9bBwuoAQ6Rsp6Llav+QblI2rxYeNOv/4+jNcziwWjDWtsGNor/pcV6lIy6XCRzdgu8Mk9a1Z7itwH/WyNJE2mqEIljch4H5AjZbMA++9jb5jwYjg1RN5Tlmt+/GWgDn5TvQZKMtTt9mlkeE972E8vym9o1R8IQGoixKGuBmDuNEPUZ+b+wSc8+iZU8MIi3pNt6KNm25lJab9iuAB"
        ]
      }
    ]
  },
  "systemd": {
    "units": [
      {
        "dropins": [
          {
            "contents": "[Service]\n# Override Execstart in main unit\nExecStart=\n# Add new Execstart with `-` prefix to ignore failure\nExecStart=-/usr/sbin/agetty --autologin core --noclear %I $TERM\nTTYVTDisallocate=no\n",
            "name": "autologin-core.conf"
          }
        ],
        "name": "serial-getty@ttyS0.service"
      }
    ]
  }
}