title: Docker "unknown flag: --from"
body: <p>I am trying to build an image using simple Dockerfile. However I am unable to get passed the above issue. I came across a kb article saying that I have to enable the "edge" repo. I have since done that, however it has made no difference. </p>
  
  <p>I am using the following version : </p>
  
  <p>Client: <br>
   Version:         1.13.1 <br>
   API version:     1.26 <br>
   Package version: docker-1.13.1-56.git6c336e4.fc28.x86_64 <br>
   Go version:      go1.10.2 <br>
   Git commit:      1ab62f1-unsupported <br>
   Built:           Thu May 24 20:48:50 2018 <br>
   OS/Arch:         linux/amd64 <br></p>
  
  <p>Server: <br>
   Version:         1.13.1 <br>
   API version:     1.26 (minimum version 1.12) <br>
   Package version: docker-1.13.1-56.git6c336e4.fc28.x86_64 <br>
   Go version:      go1.10.2 <br>
   Git commit:      1ab62f1-unsupported <br>
   Built:           Thu May 24 20:48:50 2018 <br>
   OS/Arch:         linux/amd64 <br>
   Experimental:    false <br></p>
  
  <p>If someone can tell me what I should try to get this feature working, it would be greatly appreciated. </p>