title: Cant remove docker images on azure, gives "Error: No such image"
body: <p>I can't remove docker images on azure, and I have run out of storage space.</p>
  
  <p>I login to</p>
  
  <pre><code>$ ssh -i nopass.pem -fNL LOCAL_PORT:localhost:REMOTE_PORT -p 2200 [USERNAME]@[DNSPREFIX]mgmt.[REGION].cloudapp.azure.com
  </code></pre>
  
  <p>and then I can see a bunch of images with</p>
  
  <pre><code>$ docker -H 127.0.0.1:22375 images
  REPOSITORY                    TAG                     IMAGE ID            CREATED             SIZE
  whatever.azurecr.io/whatnot   2018_01_08_12_0db3a68   7c3ea6fa5131        6 weeks ago         1.38GB
  whatever.azurecr.io/whatnot   2018_01_08_11_8978ed3   e168b18d0057        6 weeks ago         1.38GB
  whatever.azurecr.io/whatnot   2018_01_04_11_4147403   2ad5bc1170d0        6 weeks ago         1.39GB
  whatever.azurecr.io/whatnot   2018_01_02_12_785ec5e   0e8d0954009b        7 weeks ago         1.39GB
  whatever.azurecr.io/whatnot   2018_01_02_11_785ec5e   f8f33d1350c9        7 weeks ago         1.39GB
  </code></pre>
  
  <p>But when I try to remove them</p>
  
  <pre><code>$ docker -H 127.0.0.1:22375 rmi 7c3ea6fa5131
  Error: No such image: 7c3ea6fa5131
  </code></pre>
  
  <p>Can someone advice what I am doing wrong?</p>