No Fuss Computing - Docker Buildx with QEMU
This project is hosted on gitlab and has a read-only copy hosted on Github.
Stable Branch
Development Branch
links:
This is a fork of https://gitlab.com/gdunstone/docker-buildx-qemu, which appears to be a fork of a fork. anyhow, updates are required. Credit to original and derivitive devs/contributors for getting it to the stage they had!!
Contributing
All contributions for this project must conducted from Gitlab.
For further details on contributing please refer to the contribution guide.
Other
This repo is release under this license
Original README.md
docker-buildx-qemu
this is a fork of https://gitlab.com/ericvh/docker-buildx-qemu it has been modified to not depend on a gitlab-ci template repository.
This Debian-based image allows you to easily build cross-platform images. It's been tested with GitLab CI on gitlab.com, but it should work anywhere that docker-in-docker already works, and with a binfmt_misc enabled kernel.
Example Usage
This GitLab example should give you an idea of how to use the image.
Dockerfile
FROM alpine
RUN echo "Hello, my CPU architecture is $(uname -m)"
.gitlab-ci.yml
variables:
CI_BUILD_ARCHS: "linux/arm/v7,linux/arm64,linux/amd64"
CI_BUILD_IMAGE: "registry.gitlab.com/ericvh/docker-buildx-qemu"
build:
image: $CI_BUILD_IMAGE
stage: build
services:
- name: docker:dind
entrypoint: ["env", "-u", "DOCKER_HOST"]
command: ["dockerd-entrypoint.sh"]
variables:
DOCKER_HOST: tcp://docker:2375/
DOCKER_DRIVER: overlay2
# See https://github.com/docker-library/docker/pull/166
DOCKER_TLS_CERTDIR: ""
retry: 2
before_script:
- docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
# Use docker-container driver to allow useful features (push/multi-platform)
- update-binfmts --enable # Important: Ensures execution of other binary formats is enabled in the kernel
- docker buildx create --driver docker-container --use
- docker buildx inspect --bootstrap
script:
- docker buildx ls
- docker buildx build --platform $CI_BUILD_ARCHS --progress plain --pull -t "$CI_REGISTRY_IMAGE" --push .
And the (partial) output:
#6 [linux/amd64 2/2] RUN echo "Hello, my CPU architecture is $(uname -m)"
#6 0.120 Hello, my CPU architecture is x86_64
#6 DONE 0.3s
#8 [linux/arm/v7 2/2] RUN echo "Hello, my CPU architecture is $(uname -m)"
#8 0.233 Hello, my CPU architecture is armv7l
#8 DONE 0.2s