jobteaser/circleci-docker-build repository overview

⁠Docker build

⁠Docker build with buildkit

Jobs build_image, build_image_no_push, build_and_push_image use docker buildkit and can be used with a docker in docker executor jobteaser/circleci-docker-build:latest

⁠Docker multi arch build

Job build_multi_arch use docker buildx and could be used with a machine executor like ubuntu-2404:current.

⁠Architecture

The Job build docker image in 2 architecture: arm64 and amd64.

⁠Multi arch build with buildx

In a one step, docker buildx command used with multi tag -t and --push parameters to handle the images built on the different multi arch builder and successfully push it in both Docker.io and jt Harbor registries. These task could not be done in different steps for now.

For more info refer to buildx related issues 1⁠ and 2⁠

⁠Dockerfile and multi arch

If the Dockerfile having architecture related steps like build a go binary or install a install an architecture-depending library, let to find the architecture name.

An agnostic command is uname -m that works for every Linux but mind a result as :

• aarch64 for arm64
• x86_64 for amd64

Debian based distribution have dpkg --print-architecture that give arm64 or amd64 as result.

Then, the result should be exported in a variable export ARCH=$(uname -m) for example in the krakend Dockerfile⁠