Exemplo envio de arquivo via form https://felipemateus.com/blog/2021/12/mysql-salvando-arquivos-com-nestjs--mysql

form.file.html

<form action="/files" method="post" enctype="multipart/form-data">
  <input type="file" id="file" name="fike"><br><br>
  <button type="submit">Submit</button>
</form>