GitHub Actions for Easy ARM64 and AMD64 Docker Image Builds
In today's rapidly evolving software development landscape, the ability to efficiently build and deploy applications across diverse architectures is crucial. This article will explore an advanced yet accessible approach to creating multi-architecture Docker images, specifically for ARM64 and AMD64 platforms, using GitHub Actions. We will dissect a YAML configuration for a GitHub Actions workflow named 'Deploy Production,' illustrating how to automate the building and pushing of Docker images to Docker Hub.
Our focus will be on leveraging the capabilities of GitHub Actions, including setup of QEMU for emulation and Docker Buildx for building images, along with caching strategies and security practices for Docker Hub integration. This guide aims to equip developers with the knowledge and tools needed to streamline their CI/CD pipelines, ensuring seamless deployment across varied computing environments.
name: Deploy Production
on:
workflow_dispatch:
jobs:
build-and-push-docker:
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- name: Set up QEMU
uses: docker/setup-qemu-action@v1
- name: Set up Docker Buildx
uses: docker/setup-buildx-action@v1
- name: Cache Docker layers
uses: actions/cache@v2
with:
path: /tmp/.buildx-cache
key: ${{ runner.os }}-buildx-${{ github.sha }}
restore-keys: |
${{ runner.os }}-buildx-
- name: Login to Docker Hub
uses: docker/login-action@v1
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}
- name: Build and push
uses: docker/build-push-action@v2
with:
context: .
file: ./Dockerfile
push: true
tags: agasdrm/blog:latest,agasdrm/blog:${{ github.run_number }}
platforms: linux/amd64,linux/arm64/v8
cache-from: type=local,src=/tmp/.buildx-cache
cache-to: type=local,dest=/tmp/.buildx-cache