When I wanted to inspect Docker-Container that existed in a remote Docker-registry, I normally used skopeo:
skopeo inspect docker://ubuntu:latest
{
"Name": "docker.io/library/ubuntu",
"Digest": "sha256:9a0bdde4188b896a372804be2384015e90e3f84906b750c1a53539b585fbbe7f",
"RepoTags": [
"10.04",
"12.04",
"12.04.5",
}
This command show me all the information about the image that I needed to know - tags, architecture and other things. It also showed me in an simple way if I could access the registry at all.
TIL that the docker-cli has an experimental feature called docker manifest. The docker manifest feature does basically the same, albeit a bit slower:
> docker manifest inspect ubuntu:latest
{
"schemaVersion": 2,
"mediaType": "application/vnd.oci.image.index.v1+json",
"manifests": [
{
"mediaType": "application/vnd.oci.image.manifest.v1+json",
"size": 424,
"digest": "sha256:c985bc3f77946b8e92c9a3648c6f31751a7dd972e06604785e47303f4ad47c4c",
"platform": {
"architecture": "amd64",
"os": "linux"
}
},
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