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Installing from packages

Distribution Packages

skopeo may already be packaged in your distribution.

Fedora

sudo dnf -y install skopeo

RHEL/CentOS ≥ 8 and CentOS Stream

sudo dnf -y install skopeo

Newer Skopeo releases may be available on the repositories provided by the Kubic project. Beware, these may not be suitable for production environments.

on CentOS 8:

sudo dnf -y module disable container-tools
sudo dnf -y install 'dnf-command(copr)'
sudo dnf -y copr enable rhcontainerbot/container-selinux
sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_8/devel:kubic:libcontainers:stable.repo
sudo dnf -y install skopeo

on CentOS 8 Stream:

sudo dnf -y module disable container-tools
sudo dnf -y install 'dnf-command(copr)'
sudo dnf -y copr enable rhcontainerbot/container-selinux
sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_8_Stream/devel:kubic:libcontainers:stable.repo
sudo dnf -y install skopeo

RHEL/CentOS ≤ 7.x

sudo yum -y install skopeo

Newer Skopeo releases may be available on the repositories provided by the Kubic project. Beware, these may not be suitable for production environments.

sudo curl -L -o /etc/yum.repos.d/devel:kubic:libcontainers:stable.repo https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/CentOS_7/devel:kubic:libcontainers:stable.repo
sudo yum -y install skopeo

openSUSE

sudo zypper install skopeo

Alpine

sudo apk add skopeo

macOS

brew install skopeo

Nix / NixOS

$ nix-env -i skopeo

Debian

The skopeo package is available in the Bullseye (testing) branch, which will be the next stable release (Debian 11) as well as Debian Unstable/Sid.

# Debian Testing/Bullseye or Unstable/Sid
sudo apt-get update
sudo apt-get -y install skopeo

If you would prefer newer (though not as well-tested) packages, the Kubic project provides packages for Debian 10 and newer. The packages in Kubic project repos are more frequently updated than the one in Debian's official repositories, due to how Debian works. The build sources for the Kubic packages can be found here.

CAUTION: On Debian 11 and newer, including Debian Testing and Sid, we highly recommend you use Buildah, Podman and Skopeo ONLY from EITHER the Kubic repo OR the official Debian repos. Mixing and matching may lead to unpredictable situations including installation conflicts.

# Debian 10
echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_10/Release.key | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install skopeo

# Debian Testing
echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Testing/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Testing/Release.key | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install skopeo

# Debian Sid/Unstable
echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Unstable/ /' > /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Debian_Unstable/Release.key | sudo apt-key add -
sudo apt-get update
sudo apt-get -y install skopeo

Raspberry Pi OS armhf (ex Raspbian)

The Kubic project provides packages for Raspbian 10.

# Raspbian 10
echo 'deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Raspbian_10/ /' | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/Raspbian_10/Release.key | sudo apt-key add -
sudo apt-get update -qq
sudo apt-get -qq -y install skopeo

Raspberry Pi OS arm64 (beta)

Raspberry Pi OS uses the standard Debian's repositories, so it is fully compatible with Debian's arm64 repository. You can simply follow the steps for Debian to install Skopeo.

Ubuntu

The skopeo package is available in the official repositories for Ubuntu 20.10 and newer.

# Ubuntu 20.10 and newer
sudo apt-get -y update
sudo apt-get -y install skopeo

If you would prefer newer (though not as well-tested) packages, the Kubic project provides packages for active Ubuntu releases 18.04 and newer (it should also work with direct derivatives like Pop!_OS). Checkout the Kubic project page for a list of supported Ubuntu version and architecture combinations. NOTE: The command sudo apt-get -y upgrade maybe required in some cases if Skopeo cannot be installed without it. The build sources for the Kubic packages can be found here.

CAUTION: On Ubuntu 20.10 and newer, we highly recommend you use Buildah, Podman and Skopeo ONLY from EITHER the Kubic repo OR the official Ubuntu repos. Mixing and matching may lead to unpredictable situations including installation conflicts.

. /etc/os-release
echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/ /" | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list
curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/Release.key | sudo apt-key add -
sudo apt-get update
sudo apt-get -y upgrade
sudo apt-get -y install skopeo

Otherwise, read on for building and installing it from source:

To build the skopeo binary you need at least Go 1.12.

There are two ways to build skopeo: in a container, or locally without a container. Choose the one which better matches your needs and environment.

Building from Source

Building without a container

Building without a container requires a bit more manual work and setup in your environment, but it is more flexible:

  • It should work in more environments (e.g. for native macOS builds)
  • It does not require root privileges (after dependencies are installed)
  • It is faster, therefore more convenient for developing skopeo.

Install the necessary dependencies:

# Fedora:
sudo dnf install gpgme-devel libassuan-devel btrfs-progs-devel device-mapper-devel
# Ubuntu (`libbtrfs-dev` requires Ubuntu 18.10 and above):
sudo apt install libgpgme-dev libassuan-dev libbtrfs-dev libdevmapper-dev
# macOS:
brew install gpgme
# openSUSE:
sudo zypper install libgpgme-devel device-mapper-devel libbtrfs-devel glib2-devel

Make sure to clone this repository in your GOPATH - otherwise compilation fails.

git clone https://github.com/containers/skopeo $GOPATH/src/github.com/containers/skopeo
cd $GOPATH/src/github.com/containers/skopeo && make bin/skopeo

By default the make command (make all) will build bin/skopeo and the documentation locally.

Building documentation

To build the manual you will need go-md2man.

# Debian:
sudo apt-get install go-md2man
# Fedora:
sudo dnf install go-md2man

Then

make docs

Building in a container

Building in a container is simpler, but more restrictive:

  • It requires the podman command and the ability to run Linux containers.
  • The created executable is a Linux executable, and depends on dynamic libraries which may only be available only in a container of a similar Linux distribution.
$ make binary

Installation

Finally, after the binary and documentation is built:

sudo make install