4 Star 5 Fork 4

Gitee 极速下载 / skopeo

Create your Gitee Account
Explore and code with more than 12 million developers,Free private repositories !:)
Sign up
此仓库是为了提升国内下载速度的镜像仓库,每日同步一次。 原始仓库: https://github.com/containers/skopeo
Clone or Download
Sync branch
Notice: Creating folder will generate an empty file .keep, because not support in Git


skopeo is a command line utility that performs various operations on container images and image repositories.

skopeo does not require the user to be running as root to do most of its operations.

skopeo does not require a daemon to be running to perform its operations.

skopeo can work with OCI images as well as the original Docker v2 images.

Skopeo works with API V2 container image registries such as docker.io and quay.io registries, private registries, local directories and local OCI-layout directories. Skopeo can perform operations which consist of:

  • Copying an image from and to various storage mechanisms. For example you can copy images from one registry to another, without requiring privilege.
  • Inspecting a remote image showing its properties including its layers, without requiring you to pull the image to the host.
  • Deleting an image from an image repository.
  • Syncing an external image repository to an internal registry for air-gapped deployments.
  • When required by the repository, skopeo can pass the appropriate credentials and certificates for authentication.

Skopeo operates on the following image and repository types:

  • containers-storage:docker-reference An image located in a local containers/storage image store. Both the location and image store are specified in /etc/containers/storage.conf. (This is the backend for Podman, CRI-O, Buildah and friends)

  • dir:path An existing local directory path storing the manifest, layer tarballs and signatures as individual files. This is a non-standardized format, primarily useful for debugging or noninvasive container inspection.

  • docker://docker-reference An image in a registry implementing the "Docker Registry HTTP API V2". By default, uses the authorization state in $XDG_RUNTIME_DIR/containers/auth.json, which is set using skopeo login.

  • docker-archive:path[:docker-reference] An image is stored in a docker save-formatted file. docker-reference is only used when creating such a file, and it must not contain a digest.

  • docker-daemon:docker-reference An image docker-reference stored in the docker daemon internal storage. docker-reference must contain either a tag or a digest. Alternatively, when reading images, the format can also be docker-daemon:algo:digest (an image ID).

  • oci:path:tag An image tag in a directory compliant with "Open Container Image Layout Specification" at path.

Obtaining skopeo

For a detailed description how to install or build skopeo, see install.md.

Skopeo is also available as a Container Image on quay.io. For more information, see the Skopeo Image page.

Inspecting a repository

skopeo is able to inspect a repository on a container registry and fetch images layers. The inspect command fetches the repository's manifest and it is able to show you a docker inspect-like json output about a whole repository or a tag. This tool, in contrast to docker inspect, helps you gather useful information about a repository or a tag before pulling it (using disk space). The inspect command can show you which tags are available for the given repository, the labels the image has, the creation date and operating system of the image and more.


Show properties of fedora:latest

$ skopeo inspect docker://registry.fedoraproject.org/fedora:latest
    "Name": "registry.fedoraproject.org/fedora",
    "Digest": "sha256:0f65bee641e821f8118acafb44c2f8fe30c2fc6b9a2b3729c0660376391aa117",
    "RepoTags": [
    "Created": "2022-11-24T13:54:18Z",
    "DockerVersion": "1.10.1",
    "Labels": {
        "license": "MIT",
        "name": "fedora",
        "vendor": "Fedora Project",
        "version": "37"
    "Architecture": "amd64",
    "Os": "linux",
    "Layers": [
    "LayersData": [
            "MIMEType": "application/vnd.docker.image.rootfs.diff.tar.gzip",
            "Digest": "sha256:2a0fc6bf62e155737f0ace6142ee686f3c471c1aab4241dc3128904db46288f0",
            "Size": 71355009,
            "Annotations": null
    "Env": [

Show container configuration from fedora:latest

$ skopeo inspect --config docker://registry.fedoraproject.org/fedora:latest  | jq
  "created": "2020-04-29T06:48:16Z",
  "architecture": "amd64",
  "os": "linux",
  "config": {
    "Env": [
    "Cmd": [
    "Labels": {
      "license": "MIT",
      "name": "fedora",
      "vendor": "Fedora Project",
      "version": "32"
  "rootfs": {
    "type": "layers",
    "diff_ids": [
  "history": [
      "created": "2020-04-29T06:48:16Z",
      "comment": "Created by Image Factory"

Show unverified image's digest

$ skopeo inspect docker://registry.fedoraproject.org/fedora:latest | jq '.Digest'

Copying images

skopeo can copy container images between various storage mechanisms, including:

  • Container registries

    • The Quay, Docker Hub, OpenShift, GCR, Artifactory ...
  • Container Storage backends

  • Local directories

  • Local OCI-layout directories

$ skopeo copy docker://quay.io/buildah/stable docker://registry.internal.company.com/buildah
$ skopeo copy oci:busybox_ocilayout:latest dir:existingemptydirectory

Deleting images

$ skopeo delete docker://localhost:5000/imagename:latest

Syncing registries

$ skopeo sync --src docker --dest dir registry.example.com/busybox /media/usb

Authenticating to a registry

Private registries with authentication

skopeo uses credentials from the --creds (for skopeo inspect|delete) or --src-creds|--dest-creds (for skopeo copy) flags, if set; otherwise it uses configuration set by skopeo login, podman login, buildah login, or docker login.

$ skopeo login --username USER myregistrydomain.com:5000
$ skopeo inspect docker://myregistrydomain.com:5000/busybox
{"Tag":"latest","Digest":"sha256:473bb2189d7b913ed7187a33d11e743fdc2f88931122a44d91a301b64419f092","RepoTags":["latest"],"Comment":"","Created":"2016-01-15T18:06:41.282540103Z","ContainerConfig":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"9e77fef7a1c9f989988c06620dabc4020c607885b959a2cbd7c2283c91da3e33","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"DockerVersion":"1.8.3","Author":"","Config":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"9e77fef7a1c9f989988c06620dabc4020c607885b959a2cbd7c2283c91da3e33","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"Architecture":"amd64","Os":"linux"}
$ skopeo logout myregistrydomain.com:5000

Using --creds directly

$ skopeo inspect --creds=testuser:testpassword docker://myregistrydomain.com:5000/busybox
{"Tag":"latest","Digest":"sha256:473bb2189d7b913ed7187a33d11e743fdc2f88931122a44d91a301b64419f092","RepoTags":["latest"],"Comment":"","Created":"2016-01-15T18:06:41.282540103Z","ContainerConfig":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["/bin/sh","-c","#(nop) CMD [\"sh\"]"],"Image":"9e77fef7a1c9f989988c06620dabc4020c607885b959a2cbd7c2283c91da3e33","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"DockerVersion":"1.8.3","Author":"","Config":{"Hostname":"aded96b43f48","Domainname":"","User":"","AttachStdin":false,"AttachStdout":false,"AttachStderr":false,"Tty":false,"OpenStdin":false,"StdinOnce":false,"Env":null,"Cmd":["sh"],"Image":"9e77fef7a1c9f989988c06620dabc4020c607885b959a2cbd7c2283c91da3e33","Volumes":null,"WorkingDir":"","Entrypoint":null,"OnBuild":null,"Labels":null},"Architecture":"amd64","Os":"linux"}
$ skopeo copy --src-creds=testuser:testpassword docker://myregistrydomain.com:5000/private oci:local_oci_image


Please read the contribution guide if you want to collaborate in the project.


Command Description
skopeo-copy(1) Copy an image (manifest, filesystem layers, signatures) from one location to another.
skopeo-delete(1) Mark the image-name for later deletion by the registry's garbage collector.
skopeo-generate-sigstore-key(1) Generate a sigstore public/private key pair.
skopeo-inspect(1) Return low-level information about image-name in a registry.
skopeo-list-tags(1) Return a list of tags for the transport-specific image repository.
skopeo-login(1) Login to a container registry.
skopeo-logout(1) Logout of a container registry.
skopeo-manifest-digest(1) Compute a manifest digest for a manifest-file and write it to standard output.
skopeo-standalone-sign(1) Debugging tool - Sign an image locally without uploading.
skopeo-standalone-verify(1) Debugging tool - Verify an image signature from local files.
skopeo-sync(1) Synchronize images between registry repositories and local directories.


skopeo is licensed under the Apache License, Version 2.0. See LICENSE for the full license text.

Apache License Version 2.0, January 2004 https://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. Definitions. "License" shall mean the terms and conditions for use, reproduction, and distribution as defined by Sections 1 through 9 of this document. "Licensor" shall mean the copyright owner or entity authorized by the copyright owner that is granting the License. "Legal Entity" shall mean the union of the acting entity and all other entities that control, are controlled by, or are under common control with that entity. For the purposes of this definition, "control" means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity. "You" (or "Your") shall mean an individual or Legal Entity exercising permissions granted by this License. "Source" form shall mean the preferred form for making modifications, including but not limited to software source code, documentation source, and configuration files. "Object" form shall mean any form resulting from mechanical transformation or translation of a Source form, including but not limited to compiled object code, generated documentation, and conversions to other media types. "Work" shall mean the work of authorship, whether in Source or Object form, made available under the License, as indicated by a copyright notice that is included in or attached to the work (an example is provided in the Appendix below). "Derivative Works" shall mean any work, whether in Source or Object form, that is based on (or derived from) the Work and for which the editorial revisions, annotations, elaborations, or other modifications represent, as a whole, an original work of authorship. For the purposes of this License, Derivative Works shall not include works that remain separable from, or merely link (or bind by name) to the interfaces of, the Work and Derivative Works thereof. "Contribution" shall mean any work of authorship, including the original version of the Work and any modifications or additions to that Work or Derivative Works thereof, that is intentionally submitted to Licensor for inclusion in the Work by the copyright owner or by an individual or Legal Entity authorized to submit on behalf of the copyright owner. For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to the Licensor or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, the Licensor for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by the copyright owner as "Not a Contribution." "Contributor" shall mean Licensor and any individual or Legal Entity on behalf of whom a Contribution has been received by Licensor and subsequently incorporated within the Work. 2. Grant of Copyright License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare Derivative Works of, publicly display, publicly perform, sublicense, and distribute the Work and such Derivative Works in Source or Object form. 3. Grant of Patent License. Subject to the terms and conditions of this License, each Contributor hereby grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by such Contributor that are necessarily infringed by their Contribution(s) alone or by combination of their Contribution(s) with the Work to which such Contribution(s) was submitted. If You institute patent litigation against any entity (including a cross-claim or counterclaim in a lawsuit) alleging that the Work or a Contribution incorporated within the Work constitutes direct or contributory patent infringement, then any patent licenses granted to You under this License for that Work shall terminate as of the date such litigation is filed. 4. Redistribution. You may reproduce and distribute copies of the Work or Derivative Works thereof in any medium, with or without modifications, and in Source or Object form, provided that You meet the following conditions: (a) You must give any other recipients of the Work or Derivative Works a copy of this License; and (b) You must cause any modified files to carry prominent notices stating that You changed the files; and (c) You must retain, in the Source form of any Derivative Works that You distribute, all copyright, patent, trademark, and attribution notices from the Source form of the Work, excluding those notices that do not pertain to any part of the Derivative Works; and (d) If the Work includes a "NOTICE" text file as part of its distribution, then any Derivative Works that You distribute must include a readable copy of the attribution notices contained within such NOTICE file, excluding those notices that do not pertain to any part of the Derivative Works, in at least one of the following places: within a NOTICE text file distributed as part of the Derivative Works; within the Source form or documentation, if provided along with the Derivative Works; or, within a display generated by the Derivative Works, if and wherever such third-party notices normally appear. The contents of the NOTICE file are for informational purposes only and do not modify the License. You may add Your own attribution notices within Derivative Works that You distribute, alongside or as an addendum to the NOTICE text from the Work, provided that such additional attribution notices cannot be construed as modifying the License. You may add Your own copyright statement to Your modifications and may provide additional or different license terms and conditions for use, reproduction, or distribution of Your modifications, or for any such Derivative Works as a whole, provided Your use, reproduction, and distribution of the Work otherwise complies with the conditions stated in this License. 5. Submission of Contributions. Unless You explicitly state otherwise, any Contribution intentionally submitted for inclusion in the Work by You to the Licensor shall be under the terms and conditions of this License, without any additional terms or conditions. Notwithstanding the above, nothing herein shall supersede or modify the terms of any separate license agreement you may have executed with Licensor regarding such Contributions. 6. Trademarks. This License does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the NOTICE file. 7. Disclaimer of Warranty. Unless required by applicable law or agreed to in writing, Licensor provides the Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are solely responsible for determining the appropriateness of using or redistributing the Work and assume any risks associated with Your exercise of permissions under this License. 8. Limitation of Liability. In no event and under no legal theory, whether in tort (including negligence), contract, or otherwise, unless required by applicable law (such as deliberate and grossly negligent acts) or agreed to in writing, shall any Contributor be liable to You for damages, including any direct, indirect, special, incidental, or consequential damages of any character arising as a result of this License or out of the use or inability to use the Work (including but not limited to damages for loss of goodwill, work stoppage, computer failure or malfunction, or any and all other commercial damages or losses), even if such Contributor has been advised of the possibility of such damages. 9. Accepting Warranty or Additional Liability. While redistributing the Work or Derivative Works thereof, You may choose to offer, and charge a fee for, acceptance of support, warranty, indemnity, or other liability obligations and/or rights consistent with this License. However, in accepting such obligations, You may act only on Your own behalf and on Your sole responsibility, not on behalf of any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against, such Contributor by reason of your accepting any such warranty or additional liability. END OF TERMS AND CONDITIONS Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.


skopeo 是一个命令行工具,用于对容器镜像和镜像库执行各种操作,支持使用 OCI 镜像与原始的 Docker v2 镜像 expand collapse
Go and 5 more languages


No release




Load More
can not load any more


53164aa7 5694891 3bd8fe86 5694891