- `output_directory` (string) - The directory in which to save the exported tar.gz. Defaults to `output-` in the current directory. - `container_name` (string) - The name of the LXC container. Usually stored in `/var/lib/lxc/containers/`. Defaults to `packer-`. - `command_wrapper` (string) - Allows you to specify a wrapper command, such as ssh so you can execute packer builds on a remote host. Defaults to `{{.Command}}`; i.e. no wrapper. - `init_timeout` (duration string | ex: "1h5m2s") - The timeout in seconds to wait for the the container to start. Defaults to 20 seconds. - `create_options` ([]string) - Options to pass to lxc-create. For instance, you can specify a custom LXC container configuration file with ["-f", "/path/to/lxc.conf"]. Defaults to []. See man 1 lxc-create for available options. - `start_options` ([]string) - Options to pass to lxc-start. For instance, you can override parameters from the LXC container configuration file via ["--define", "KEY=VALUE"]. Defaults to []. See man 1 lxc-start for available options. - `attach_options` ([]string) - Options to pass to lxc-attach. For instance, you can prevent the container from inheriting the host machine's environment by specifying ["--clear-env"]. Defaults to []. See man 1 lxc-attach for available options. - `template_parameters` ([]string) - Options to pass to the given lxc-template command, usually located in `/usr/share/lxc/templates/lxc-`. Note: This gets passed as ARGV to the template command. Ensure you have an array of strings, as a single string with spaces probably won't work. Defaults to []. - `target_runlevel` (int) - The minimum run level to wait for the container to reach. Note some distributions (Ubuntu) simulate run levels and may report 5 rather than 3.