内置在自定义Terraform提供程序中的内置外部二进制文件

I'm currently creating private Terraform provider that is required to make calls to external binary (PEX file) via exec.Command

If make very short example:

func resourceCreate(d *schema.ResourceData, m interface{}) error {
   ...
   cmd := exec.Command("./custom-pex-file", arg...)
   ...
}

I'm wondering what is correct and easy way to build-in this custom PEX file in final binary that would be compiled by go compiler.