Docker BuildKit

In 2020, Docker announced support for multi-architecture images, and later, Docker BuildKit officially supported multi-architecture images. This article introduces how to use Drone CI/CD with Docker BuildKit to compile multi-architecture images, and this feature is free and does not require a paid Docker Hub account. However, the Drone Docker Plugin provided by Drone CI/CD does not currently support multi-architecture images, so you need to write your own Drone Pipeline to achieve our goal. The official website has also proposed this proposal: ‘Support cross-arch Docker builds within Docker using QEMU’ to achieve this goal, using QEMU. The key point is to use Docker BuildKit to complete it under the environment where the Host supports Qemu.

在 2020 年就有 Docker 宣布支援多架構映像檔，後來才有正式的 Docker BuildKit 支援多架構映像檔，這篇文章來介紹如何使用 Drone CI/CD 搭配 Docker BuildKit 編譯多架構映像檔，而且這個功能是免費的，不需要付費的 Docker Hub 帳號。但是在 Drone CI/CD 官方提供的 Drone Docker Plugin 目前是不支援多架構映像檔，所以需要自己撰寫 Drone Pipeline，來達到我們的目的，官方也有人提出了這樣的 Proposal: 『Support cross-arch Docker builds within Docker using QEMU』，使用 QEMU 來達成目的，底下來介紹如何使用，關鍵點就是在 Host 支援 Qemu 的環境下，使用 Docker BuildKit 完成。