title: Rails upload static image url to s3
body: <p>I need to copy images from static image url which are stored in database tables
  like : <a href="https://www.gravatar.com/avatar/b8c19609aaa9eb291f2a5974e369e2a4?s=328&amp;d=identicon&amp;r=PG&amp;f=1" rel="nofollow">https://www.gravatar.com/avatar/b8c19609aaa9eb291f2a5974e369e2a4?s=328&amp;d=identicon&amp;r=PG&amp;f=1</a></p>
  
  <p>to s3 using ruby on rails</p>