NAME
skopeo-inspect - Return low-level information about image-name in a registry.
SYNOPSIS
skopeo inspect [options] image-name
DESCRIPTION
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).
OPTIONS
See also skopeo(1) for options placed before the subcommand name.
--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). Supports the Go templating functions available at https://pkg.go.dev/github.com/containers/common/pkg/report#hdr-Template_Functions
--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.
EXAMPLES
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:f99efcddc4dd6736d8a88cc1ab6722098ec1d77dbf7aed9a7a514fc997ca08e0",
"RepoTags": [
"20",
"21",
"..."
],
"Created":
"2022-11-16T07:26:42.618327645Z",
"DockerVersion": "20.10.12",
"Labels": {
"maintainer": "Clement Verna
\u003ccverna [AT] fedoraproject.org\u003e"
},
"Architecture": "amd64",
"Os": "linux",
"Layers": [
"sha256:cb8b1ed77979b894115a983f391465651aa7eb3edd036be4b508eea47271eb93"
],
"LayersData": [
{
"MIMEType":
"application/vnd.docker.image.rootfs.diff.tar.gzip",
"Digest":
"sha256:cb8b1ed77979b894115a983f391465651aa7eb3edd036be4b508eea47271eb93",
"Size": 65990920,
"Annotations": null
}
],
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"DISTTAG=f37container",
"FGC=f37",
"FBR=f37"
]
}
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":
"sha256:10fc14aa6ae69f69e4c953cffd9b0964843d8c163950491d2138af891377bc1d",
"RepoTags": [],
"Created":
"2022-11-16T06:55:28.566254104Z",
"DockerVersion": "20.10.12",
"Labels": null,
"Architecture": "amd64",
"Os": "linux",
"Layers": [
"sha256:a8ca11554fce00d9177da2d76307bdc06df7faeb84529755c648ac4886192ed1",
"sha256:e4e46864aba2e62ba7c75965e4aa33ec856ee1b1074dda6b478101c577b63abd",
"..."
],
"LayersData": [
{
"MIMEType":
"application/vnd.docker.image.rootfs.diff.tar.gzip",
"Digest":
"sha256:a8ca11554fce00d9177da2d76307bdc06df7faeb84529755c648ac4886192ed1",
"Size": 55038615,
"Annotations": null
},
{
"MIMEType":
"application/vnd.docker.image.rootfs.diff.tar.gzip",
"Digest":
"sha256:e4e46864aba2e62ba7c75965e4aa33ec856ee1b1074dda6b478101c577b63abd",
"Size": 5164893,
"Annotations": null
},
"..."
],
"Env": [
"PATH=/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"LANG=C.UTF-8",
"...",
]
}
$ /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]
SEE ALSO
skopeo(1), skopeo-login(1), docker-login(1), containers-auth.json(5)
AUTHORS
Antonio Murdaca runcom [AT] redhat.com ⟨ mailto:runcom [AT] redhat.com⟩ , Miloslav Trmac mitr [AT] redhat.com ⟨ mailto:mitr [AT] redhat.com⟩ , Jhon Honce jhonce [AT] redhat.com ⟨ mailto:jhonce [AT] redhat.com⟩