% skopeo-inspect(1)
skopeo-inspect - Return low-level information about image-name in a registry.
skopeo inspect [options] image-name
Return low-level information about image-name in a registry. See skopeo(1) for the format of image-name.
The default output includes data from various sources: user input (Name), the remote repository, if any (RepoTags), the top-level manifest (Digest), and a per-architecture/OS image matching the current run-time environment (most other values). To see values for a different architecture/OS, use the --override-os / --override-arch options documented in skopeo(1).
--authfile path
Path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json, which is set using skopeo login
.
If the authorization state is not found there, $HOME/.docker/config.json is checked, which is set using docker login
.
--cert-dir path
Use certificates at path (*.crt, *.cert, *.key) to connect to the registry.
--config
Output configuration in OCI format, default is to format in JSON format.
--creds username[:password]
Username and password for accessing the registry.
--daemon-host host
Use docker daemon host at host (docker-daemon:
transport only)
--format, -f=format
Format the output using the given Go template. The keys of the returned JSON can be used as the values for the --format flag (see examples below).
--help, -h
Print usage statement
--no-creds
Access the registry anonymously.
--raw
Output raw manifest or config data depending on --config option. The --format option is not supported with --raw option.
--registry-token Bearer token
Registry token for accessing the registry.
--retry-times
The number of times to retry; retry wait time will be exponentially increased based on the number of failed attempts.
--shared-blob-dir directory
Directory to use to share blobs across OCI repositories.
--tls-verify=bool
Require HTTPS and verify certificates when talking to the container registry or daemon. Default to registry.conf setting.
--username
The username to access the registry.
--password
The password to access the registry.
--no-tags, -n
Do not list the available tags from the repository in the output. When true
, the RepoTags
array will be empty. Defaults to false
, which includes all available tags.
To review information for the image fedora from the docker.io registry:
$ skopeo inspect docker://docker.io/fedora
{
"Name": "docker.io/library/fedora",
"Digest": "sha256:a97914edb6ba15deb5c5acf87bd6bd5b6b0408c96f48a5cbd450b5b04509bb7d",
"RepoTags": [
"20",
"21",
"22",
"23",
"24",
"heisenbug",
"latest",
"rawhide"
],
"Created": "2016-06-20T19:33:43.220526898Z",
"DockerVersion": "1.10.3",
"Labels": {},
"Architecture": "amd64",
"Os": "linux",
"Layers": [
"sha256:7c91a140e7a1025c3bc3aace4c80c0d9933ac4ee24b8630a6b0b5d8b9ce6b9d4"
]
}
To inspect python from the docker.io registry and not show the available tags:
$ skopeo inspect --no-tags docker://docker.io/library/python
{
"Name": "docker.io/library/python",
"Digest": "sha256:5ca194a80ddff913ea49c8154f38da66a41d2b73028c5cf7e46bc3c1d6fda572",
"RepoTags": [],
"Created": "2021-10-05T23:40:54.936108045Z",
"DockerVersion": "20.10.7",
"Labels": null,
"Architecture": "amd64",
"Os": "linux",
"Layers": [
"sha256:df5590a8898bedd76f02205dc8caa5cc9863267dbcd8aac038bcd212688c1cc7",
"sha256:705bb4cb554eb7751fd21a994f6f32aee582fbe5ea43037db6c43d321763992b",
"sha256:519df5fceacdeaadeec563397b1d9f4d7c29c9f6eff879739cab6f0c144f49e1",
"sha256:ccc287cbeddc96a0772397ca00ec85482a7b7f9a9fac643bfddd87b932f743db",
"sha256:e3f8e6af58ed3a502f0c3c15dce636d9d362a742eb5b67770d0cfcb72f3a9884",
"sha256:aebed27b2d86a5a3a2cbe186247911047a7e432b9d17daad8f226597c0ea4276",
"sha256:54c32182bdcc3041bf64077428467109a70115888d03f7757dcf614ff6d95ebe",
"sha256:cc8b7caedab13af07adf4836e13af2d4e9e54d794129b0fd4c83ece6b1112e86",
"sha256:462c3718af1d5cdc050cfba102d06c26f78fe3b738ce2ca2eb248034b1738945"
],
"Env": [
"PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"LANG=C.UTF-8",
"GPG_KEY=A035C8C19219BA821ECEA86B64E628F8D684696D",
"PYTHON_VERSION=3.10.0",
"PYTHON_PIP_VERSION=21.2.4",
"PYTHON_SETUPTOOLS_VERSION=57.5.0",
"PYTHON_GET_PIP_URL=https://github.com/pypa/get-pip/raw/d781367b97acf0ece7e9e304bf281e99b618bf10/public/get-pip.py",
"PYTHON_GET_PIP_SHA256=01249aa3e58ffb3e1686b7141b4e9aac4d398ef4ac3012ed9dff8dd9f685ffe0"
]
}
$ /bin/skopeo inspect --config docker://registry.fedoraproject.org/fedora --format "{{ .Architecture }}"
amd64
$ /bin/skopeo inspect --format '{{ .Env }}' docker://registry.access.redhat.com/ubi8
[PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin container=oci]
skopeo(1), skopeo-login(1), docker-login(1), containers-auth.json(5)
Antonio Murdaca [email protected], Miloslav Trmac [email protected], Jhon Honce [email protected]