docker run with sha #2815
Description
Description
docker run fails to run images by digest without the sha256: prefix with version 20.10.0-beta1.
Steps to reproduce the issue:
- New behaviour
$ docker version
20.10.0-beta1
$ docker build --pull -q . -f-<<EOF
FROM busybox
CMD echo "hello world"
EOF
sha256:9b3cf996b8a64e68ab6b9342b7cda274f63085ac303d9d55e33a3349dcff8f36
$ docker run --rm 9b3cf996b8a64e68ab6b9342b7cda274f63085ac303d9d55e33a3349dcff8f36
docker: Error response from daemon: invalid repository name (9b3cf996b8a64e68ab6b9342b7cda274f63085ac303d9d55e33a3349dcff8f36), cannot specify 64-byte hexadecimal strings.
- Previous behaviour
$ docker version
19.03.12
$ docker build --pull -q . -f-<<EOF
FROM busybox
CMD echo "hello world"
EOF
sha256:1c1941709ada55146ea0b49b18a59b463feeb9f4de0acedb0620e6f034b54bd9
$ docker run --rm 1c1941709ada55146ea0b49b18a59b463feeb9f4de0acedb0620e6f034b54bd9
hello world
Reading the docs it isn't fully clear to me whether this way to run was supported https://docs.docker.com/engine/reference/commandline/run/, but it is also not listed as breaking change in https://github.com/docker/docker-ce/blob/0fc7084265b3786a5867ec311d3f916af7bf7a23/CHANGELOG.md
This change was likely introduced in #1498 where the image is pulled now before being created, while it was just created before.