Add support for referencing images via their 'short sha' #104
Description
Today if I have an image that is only referenced via a sha - its not easy for me to delete this image. For example
container i pull alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715
container i ls
NAME TAG DIGEST
alpine <none> 8a1f59ffb675680d47db6337...
container i rm alpine:8a1f59ffb675680d47db6337
Error: internalError: "failed to delete one or more images: ["alpine:8a1f59ffb675680d47db6337"]"
It is only if I use the -q flag with image ls is the full sha returned which can be used to perform the delete operation.
container i ls -q
alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715
container i rm alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715
docker.io/library/alpine@sha256:8a1f59ffb675680d47db6337b49d22281a139e9d709335b492be023728e11715
Reclaimed 650.8 MB in disk space
It would make it easier we could use the short sha which is displayed during the output of image ls to refer to an image