| skopeo-list-tags(1)() | skopeo-list-tags(1)() |
NAME¶
skopeo-list-tags - List image names in a transport-specific collection of images.
SYNOPSIS¶
skopeo list-tags [options] source-image
Return a list of tags from source-image in a registry or a local docker-archive file.
source-image name of the repository to retrieve a tag listing from or a local docker-archive file.
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.
--creds username[:password] for accessing the registry.
--cert-dir path
Use certificates at path (*.crt, *.cert, *.key) to connect to the registry.
--help, -h
Print usage statement
--no-creds
Access the registry anonymously.
--registry-token Bearer token
Bearer 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.
--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.
REPOSITORY NAMES¶
Repository names are transport-specific references as each transport may have its own concept of a "repository" and "tags".
This commands refers to repositories using a transport:details format. The following formats are supported:
docker://docker-repository-reference
A repository in a registry implementing the "Docker Registry HTTP API
V2". By default, uses the authorization state in either
$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).
A docker-repository-reference is of the form:
registryhost:port/repositoryname which is similar to an
image-reference but with no tag or digest allowed as the last
component (e.g no :latest or @sha256:xyz)
Examples of valid docker-repository-references:
"docker.io/myuser/myrepo"
"docker.io/nginx"
"docker.io/library/fedora"
"localhost:5000/myrepository"
Examples of invalid references:
"docker.io/nginx:latest"
"docker.io/myuser/myimage:v1.0"
"docker.io/myuser/myimage@sha256:f48c4cc192f4c3c6a069cb5cca6d0a9e34d6076ba7c214fd0cc3ca60e0af76bb"
**docker-archive:path[:docker-reference]
more than one images were stored in a docker save-formatted file.
EXAMPLES¶
Docker Transport¶
To get the list of tags in the "fedora" repository from the docker.io registry (the repository name expands to "library/fedora" per docker transport canonical form):
$ skopeo list-tags docker://docker.io/fedora {
"Repository": "docker.io/library/fedora",
"Tags": [
"20",
"21",
"22",
"23",
"24",
"25",
"26-modular",
"26",
"27",
"28",
"29",
"30",
"31",
"32",
"branched",
"heisenbug",
"latest",
"modular",
"rawhide"
] }
To list the tags in a local host docker/distribution registry on port 5000, in this case for the "fedora" repository:
$ skopeo list-tags docker://localhost:5000/fedora {
"Repository": "localhost:5000/fedora",
"Tags": [
"latest",
"30",
"31"
] }
Docker-archive Transport¶
To list the tags in a local docker-archive file:
$ skopeo list-tags docker-archive:/tmp/busybox.tar.gz
{
"Tags": [
"busybox:1.28.3"
]
}
Also supports more than one tags in an archive:
$ skopeo list-tags docker-archive:/tmp/docker-two-images.tar.gz
{
"Tags": [
"example.com/empty:latest",
"example.com/empty/but:different"
]
}
Will include a source-index entry for each untagged image:
$ skopeo list-tags docker-archive:/tmp/four-tags-with-an-untag.tar
{
"Tags": [
"image1:tag1",
"image2:tag2",
"@2",
"image4:tag4"
]
}
SEE ALSO¶
skopeo(1), skopeo-login(1), docker-login(1), containers-auth.json(5), containers-transports(1)
AUTHORS¶
Zach Hill zach@anchore.com ⟨mailto:zach@anchore.com⟩