skopeo: Unable to locate package skopeo on Ubuntu 18.04 & 20.04

Starting having issues pulling Skopeo into my Ubuntu 18.04 images starting last night. How can we get skopeo to install?

# apt-get install -y skopeo
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package skopeo

About this issue

Original URL
State: closed
Created 2 years ago
Reactions: 3
Comments: 15 (3 by maintainers)

Commits related to this issue

Install skopeo from source Refs https://github.com/containers/skopeo/issues/1648 — committed to felipecrs/jenkins-agent-dind by felipecrs 2 years ago
Download skopeo binary instead of from APT Because the Kubic repository (needed for Ubuntu 20.04) is no longer working well. This also allows us to use the latest version of skopeo. Refs https://git... — committed to felipecrs/dotfiles by felipecrs a year ago

Most upvoted comments

For those using skopeo in a docker image, you can statically build it from source like this:

FROM golang:1.18 AS skopeo-build

WORKDIR /usr/src/skopeo

ARG SKOPEO_VERSION="1.8.0"
RUN curl -fsSL "https://github.com/containers/skopeo/archive/v${SKOPEO_VERSION}.tar.gz" \
  | tar -xzf - --strip-components=1

RUN CGO_ENABLED=0 DISABLE_DOCS=1 make BUILDTAGS=containers_image_openpgp GO_DYN_FLAGS=

RUN ./bin/skopeo --version


FROM scratch AS skopeo-rootfs

COPY --from=skopeo-build /usr/src/skopeo/bin/skopeo /usr/local/bin/
COPY --from=skopeo-build /usr/src/skopeo/default-policy.json /etc/containers/policy.json


FROM ubuntu:20.04

COPY --from=skopeo-rootfs / /

RUN skopeo --version

+13

felipecrs on May 19, 2022

Hi all, RE: 18.04, skopeo seems to have been enabled mistakenly because of cri-o sharing the project. The kubic packages (at least in the form they were) were causing more trouble than they were solving. Lack of maintenance + issues on the Kubic infra side such as the hash mismatches were why I removed them. Please build skopeo from source or use the skopeo container image

lsm5 on May 23, 2022

Skopeo seems to be entirely gone from https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_20.04/

felipecrs on May 19, 2022

I think the title of the PR could be changed to include 20.04 as well.

felipecrs on May 19, 2022

A small addition to @felipecrs comments: you need BuildKit enabled to use the --output flag.

robin-wayve on Dec 6, 2022

PS: You can use my Dockerfile above to also install skopeo with the following command:

sudo docker build . --target skopeo-rootfs --output=/

It will write two files to your system: /usr/local/bin/skopeo and /etc/containers/policy.json

felipecrs on May 20, 2022

I understand it’s not being updated for 18.04 but why was it completely removed?

jdockter on May 19, 2022

Especially considering that the number of people using Ubuntu 18.04 and 20.04 completely overwhelms the number of people using 22.04 currently.

felipecrs on May 19, 2022