Skopeo sync example. skopeo 是一个命令行工具，可对容器镜像和容器存储进行操作。 在没有dockerd的环境下，使用 skopeo 操作镜像是非常方便的。 安装 包管理器 # RHEL / CentOS Stream ≥ 8 sudo dnf install skopeo # RHEL/CentOS ≤ 7. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Full featured example of building a container for an Elixir Phoenix project, taking advantage of BuildKit caching and multi-platform builds (Arm). A longer image path will cause an error when attempting to sync. skopeo can work with OCI images as well as the original Docker v2 images. nh . The following examples skopeo is a command line utility that performs various operations on container images and image repositories. This can be useful to create and keep container mirrors synchronized in an air gapped environment. Dec 17, 2024 · Skopeo is a versatile container image management toolbox that allows users to manage remote container images. skopeo can copy container images between various containers image stores, converting them as necessary. com Dec 17, 2024 · When working with docker and private image registries, a common workflow is to copy images from one private registry in the cloud to another. For example you can use skopeo to copy container images from one container registry to another. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and This guide explains how to manage container images using Skopeo alongside Podman, covering installation, inspection, copying, deleting, and synchronizing images. 168. Description skopeo is a command line utility providing various operations with container images and container image registries. Useful to synchronize a local container registry mirror, and to to populate registries running inside of air-gapped environments. sh file and depending on the input various operations Work with remote images registries - retrieving information, images, signing content - skopeo/cmd/skopeo/sync. skopeo can convert a Docker schema 2 or schema 1 container image to an OCI image Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. Synchronize images between registry repositories and local directories. 0-41-generic x86_64) Skopeo version skopeo version 1. 1 Reproducible: always Expected behavior: when running skopeo copy or skopeo sync it should be possible to copy image signatures that were created with cosign as part Jan 11, 2023 · We currently need to use a source file for all projects we use, and run the sync command with the correct destination for this project. With skopeo, it’s also easy to provide authentication credentials for secured registries. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Nov 27, 2021 · With latest skopeo docker image, when I wanted to synchronize my images from Sonatype Nexus to Docker Registry v2, it always tries with HTTPS first, and after it reached the timeout, then fallback to HTTP. 1. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and dregsy lets you sync container images between registries, public or private. ) NAME skopeo-sync - Synchronize images between registry repositories and local directories. Get practical examples for faster image inspection, single-command pushing, and mirroring multiple registries. SH NAME skopeo-sync \- Synchronize images between registry repositories and local directories. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local Jul 20, 2020 · There is skopeo sync that allows copying tagged images from a single repository. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. SH DESCRIPTION Synchronize images between registry repositories and local directories. . DESCRIPTION skopeo is a command line utility providing various operations with container images and container image registries. Skopeo works with API V2 container image registries Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. 13. Skopeo doesn't need to interact with the local container storage (. Jan 16, 2022 · I'm trying to use Skopeo to sync images from DockerHub to an air-gapped test environment. skopeo is a command line utility that performs various operations on container images and image repositories. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local container May 24, 2021 · For example I was adding this below sync command in a script file operations. Apr 8, 2024 · TL;DR コンテナイメージをコピーするには、docker pull/push ではなく、skopeo が便利 デーモンレスなので、dockerd や containerd を必要としない ホストの CPU アーキテクチャに依存せずマルチアーキテクチャのイメージも簡単にコピーできる skopeo skopeo は OCI アーティファクトを操作する CLI です。 Podman で Aug 1, 2023 · Found in version: skopeo v1. 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. When doing a skopeo login, Skopeo logs into the specified registry and stores the authentication token in an authfile. SH SYNOPSIS \fBskopeo sync\fP [\fIoptions\fP] --src \fItransport\fP --dest \fItransport\fP \fIsource\fP \fIdestination\fP . Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local container registry mirror or for populating registries running inside of air-gapped environments. io/kyverno with this source file: NAME ¶ skopeo-sync - Synchronize images between registry repositories and local directories. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Mar 17, 2020 · Hi, I'm trying to sync images between two docker registries using skopeo. example. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Aug 3, 2018 · I could go on about Continuous Delivery best practices, but today’s post focuses on skopeo, the key to how this pipeline copies container images between two clusters’ registries. Sep 29, 2021 · Although skopeo supports mirrors in dir format, skopeo does not currently support direct use of the registry storage directory, so you still need to find a way to convert each image in the docker registry storage directory into a skopeo dir format. Useful to synchronize a local container registry skopeo is a command line utility providing various operations with container images and container image registries. Shows raw docker, docker-compose, and Earthly; mir Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. io Harbor 私有仓库： harbor. 41 onwards, has been extremely helpful. skopeo does not require the user to be running as root to do most of its operations. 登陆（skopeo login） 我这里有三个仓库地址 Docker 官方 hub 仓库： docker. My host is an Ubuntu 21. Mirroring images and charts To mirror all necessary container images and Helm charts into your own registry, you can either use a replication feature that your registry provides, or you can manually sync the images with Skopeo: First login to the source registry: May 3, 2023 · All reactions jinjianming changed the title help: skopeo sync How to keep mirroring to project names help: skopeo sync How to preserve the project name of the mirror on May 3, 2023 Contributor Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. io) to the OpenShift internal image registry using Skopeo. Dec 14, 2022 · 8. Its job has been limited to inspect (skopeo is greek for looking for, observe) images on remote registries as opposed to docker inspect, which is working for Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. Shows raw docker, docker-compose, and Earthly; mir Feb 26, 2021 · Inspect a local image using the Skopeo Docker image: Instead of installing Skopeo directly (e. 80:5000 在使用 skopeo 前，如果 src 或 dest 镜像是在 registry 仓库中的并且配置了非 public 的镜像需要相应的 auth 认证, 此时我们可以使用 docker login 或者 skopeo login 的方式登录 Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. For example, for kyverno, we have this command skopeo sync --src yaml --dest docker sources. Skopeo is a tool to inspect and manage container images. (There isn’t any way to enumerate images only reachable using a digest, and) there isn’t any reliable way to list all repositories in a namespace; I’m afraid you’ll have to obtain the list of library/* repositories some other way, and iterate through that list manually / using a shell script. NAME ¶ skopeo-sync - Synchronize images between registry repositories and local directories. 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. io/library/registry, and Skopeo, in particular the sync command from Skopeo 0. Several sync tasks can be defined, as one-off or periodic tasks (see Configuration section). There is any option to use only DESCRIPTION skopeo is a command line utility providing various operations with container images and container image registries. skopeo does not require a daemon to be running to perform its operations. Back in March, I published a post about skopeo, a new tiny binary to help people interact with Docker registries. Shows raw docker, docker-compose, and Earthly; mir Contribute to misshehe/sync-image-example development by creating an account on GitHub. com Registry 私有仓库：192. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and tag. But that wouldn’t explain how skopeo copy works, so either it’s not that, or there is some variable not accounted for in the above. x yum install skopeo # openSUSE: sudo zypper install skopeo # alpine: sudo apk add skopeo # macOS: brew install skopeo # ArchLinux sudo Apr 26, 2025 · Skopeo est un outil de ligne de commande qui permet de travailler avec des images de conteneurs et des dépôts d'images de conteneurs. Learn to inspect, copy, sync, and manipulate container images across registries with practical examples. We’ve previously covered Podman and Buildah, and this time we will cover Skopeo. Contribute to bxb100/skopeo-sync-action development by creating an account on GitHub. In this first part we’re going to focus on skopeo. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Apr 8, 2024 · Skopeo works with API V2 container image registries such as docker. Skopeo provides a suite of utility commands to inspect, copy, delete, and authenticate images across different container registries. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Aug 10, 2025 · NAME ¶ skopeo-sync - Synchronize images between registry repositories and local directories. skopeo dir So let’s take a look at what skopeo dir looks like. Current behavior Without --scoped a source image registry1/first/last:tag results in Sep 16, 2021 · After using skopeo sync to sync the images to the local images directory, the size of all the images is 11G and the total number of files is 1264. An image is synced by using a sync relay. This can be done with skopeo. Terraform I recently learned there is a terraform provider for skopeo, with the two providers aws and skopeo, I wrote terraform files that works pretty much the same as the previous script, but it can create the registries with aws_ecr_repository resource. See full list on marcbrandner. io and quay. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified NAME skopeo-sync - Synchronize images between registry repositories and local directories. Aug 1, 2025 · skopeo is able to inspect a repository on a container registry and fetch images layers. redhat. local/share/containers), it can move directly between registries, between container engine storage, or even directories. customgitlab. io registries, private registries, local directories, and local OCI-layout directories. SYNOPSIS ¶ skopeo sync --src transport --dest transport source destination DESCRIPTION ¶ Synchronize images between container registries and local directories. Synchronization is achieved by copying all the images found at NAME ¶ skopeo-sync - Synchronize images between container registries and local directories. Nov 13, 2024 · When trying to sync to another gitlab registry there was an issue encountered where the image path was not parsed correctly by skopeo. SYNOPSIS ¶ skopeo sync [options] --src transport --dest transport source destination DESCRIPTION ¶ Synchronize images between registry repositories and local directories. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local Full featured example of building a container for an Elixir Phoenix project, taking advantage of BuildKit caching and multi-platform builds (Arm). Feb 24, 2025 · This article provides a step-by-step guide to copying container images from Red Hat's external registry (registry. SYNOPSIS skopeo sync [options] --src transport --dest transport source destination DESCRIPTION Synchronize images between registry repositories and local directories. g. skopeo can convert a Docker schema 2 or schema 1 container image to an OCI image. 04 (GNU/Linux 5. Jul 23, 2025 · Skopeo is an open-source container management tool that helps in inspecting docker images, transferring or copying over images' manifest files, and interacting with container registries in a stateless manner. , via apt or another package manager), you can use the Skopeo Docker image: Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. 11. Synchronize images between registry repositories and local directories. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and tag. See Table 1 to find out which Skopeo commands are supported for IBM z/OS Container Platform (zOSCP) and Tables 2 - 3 to find out which Skopeo commands and flags are not supported. It allows you to inspect, copy, delete, and sign/verify images without needing a full Docker daemon. Aug 26, 2025 · Master skopeo command in Linux for efficient container image management. This post includes some common recipes for it. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Full featured example of building a container for an Elixir Phoenix project, taking advantage of BuildKit caching and multi-platform builds (Arm). Shows raw docker, docker-compose, and Earthly; mir. , --dest-overwrite={true,false}). Work with remote images registries - retrieving information, images, signing content - containers/skopeo Use the skopeo sync command to synchronize images between storage locations. 2. sh (I have added other Skopeo abilities also in this operations. com: images: git Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. When using the latter, the image is first pulled from the source, then tagged for the destination, and finally pushed Skopeo is a command-line utility for working with container images and image registries. The synchronization is achieved by copying all the images found at source to destination. It’s particularly useful in environments that require handling images without the overhead of fully running a container engine. glossary skopeo is a command line utility that performs various operations on container images and image repositories. Sep 24, 2025 · Simplify container image management with Skopeo. TH skopeo-sync(1) . Feb 23, 2023 · If skopeo sync is solely responsible for defining and determining the source → destination mapping, presumably the mapping would be determined by parsing the output of skopeo sync … fair enough, it is using some kind of structured logging (although the output format is, strictly speaking, undocumented and not committed to be stable) Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Apr 16, 2020 · We're slowly moving from traditional Docker service to Podman serviceless, whilst also migrating images from AWS ECR to a new private registry we've set up using docker. Jun 22, 2020 · However, we are heading toward a first example where we need to remind ourselves that running a container is different. Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. Synchronization is achieved by copying all the images found at _source_ to _destination_ - useful All Things Tekton Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and skopeo is a command line utility that performs various operations on container images and image repositories. Unlike skopeo copy, which assumes that the requested copy requires action, skopeo sync is tuned to be faster on regular re-syncs of large repositories with few modifications. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Apr 23, 2022 · Solution #2. fumai. ## SYNOPSIS **skopeo sync** [*options*] --src _transport_ --dest _transport_ _source_ _destination_ ## DESCRIPTION Synchronize images between registry repositories and local directories. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local Aug 29, 2021 · 安装方式 Clone repo docker build 上手体验 命令子选项 参数 IMAGE NAMES 镜像格式 skopeo login skopeo copy 从 Regsitry A 到 Registry B 复制镜像 将镜像从 Registry 复制到本地目录 将镜像从 Registry 复制到本地目录，以 OCI 格式保存 替代 docker push 功能，将镜像从 Docker 本地存储 push 到 Registry 中 skopeo sync skopeo inspect skopeo Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. skopeo can work with OCI images Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local container NAME skopeo-sync - Synchronize images between registry repositories and local directories. (Also, consider using a newer version of Skopeo; this one seems to be at least three years old. Jul 4, 2022 · Container cloud native technology is very good in this regard, but there will be some problems with the details in actual use, for example: How to save/sync multi-architecture container Docker images This time, let’s take the example of synchronizing the image of Docker Hub to the local image repository. Podman, docker, and various CLI tools already offer this functionality for local images, but Skopeo can also inspect and manage images in **remote repositories** and even EXAMPLES 146 Synchronizing to a local directory 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 Synchronizing to a container registry from local 162 163 IBM® for z/OS® IBM z/OS for Skopeo (Skopeo) is a command-line utility that is used to interact with local and remote OCI images and registries. I think we can make the behavior conditional by adding a new flag (e. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified Differently from other skopeo commands, skopeo sync requires both source and destination transports to be specified separately from source and destination. go at main · containers/skopeo % skopeo-sync(1) ## NAME skopeo\-sync - Synchronize images between registry repositories and local directories. Jul 25, 2016 · This is the first part of a series of posts about containers’ images. This first example is authenticating via a so-called authentication file (authfile). Nov 8, 2024 · sync images between docker registries. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and Mar 31, 2021 · Yes, skopeo sync refuses to overwrite existing directories on the host to prevent accidental data corruption. yaml private. One of the problems of prefixing a destination with its transport is that, the registry docker://hostname:port would be wrongly interpreted as an image reference at a non-fully qualified registry, with hostname and port the image name and EXAMPLES 151 Synchronizing to a local directory 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 Synchronizing to a container registry from local 167 168 Get up and running quickly with the most common tool settings with code snippets, using this Skopeo installation guide. Full featured example of building a container for an Elixir Phoenix project, taking advantage of BuildKit caching and multi-platform builds (Arm). 10. Currently, this can be either Skopeo or a local Docker daemon. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local container Jul 18, 2022 · Skopeo sync allows direct registry-to-registry copies for on-line use as well as registry-to-files and files-to-registry for preparing disconnected environments. Synchronization is achieved by copying all the images found at source to destination - useful when synchronizing a local Dec 14, 2022 · This is the third part in our series of blog posts about lightweight container tools. pw 4yh nwqvqqj 5dbtw9 uqgxtfu ug831v n1t dvi 4wjj s5iqrf