Cant remove docker images on azure, gives "Error: No such image"

Question

I can't remove docker images on azure, and I have run out of storage space.

I login to

$ ssh -i nopass.pem -fNL LOCAL_PORT:localhost:REMOTE_PORT -p 2200 [USERNAME]@[DNSPREFIX]mgmt.[REGION].cloudapp.azure.com

and then I can see a bunch of images with

$ 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

But when I try to remove them

$ docker -H 127.0.0.1:22375 rmi 7c3ea6fa5131
Error: No such image: 7c3ea6fa5131

Can someone advice what I am doing wrong?

Answer 1

I have also run into this problem on azure and am not sure what causes it. Try a docker system prune if you can afford to lose your images and volumes not currently being used. If you can, also try restarting docker. The combination of those two steps worked for me.