docker/setup-buildx-action Error | Key Options

The docker/setup-buildx-action is a GitHub Action used to set up Docker Buildx in your GitHub Actions workflows. Buildx is a Docker CLI plugin that extends the docker build command with support for multi-platform builds, caching, and more advanced features.

If you’re seeing an error with docker/setup-buildx-action, let’s break it down in two parts:

🛑 Common Errors

1. Error: buildx is not available

• Cause: Docker Buildx is not installed or not correctly set up.

• Fix: Ensure the action is used with install: true and use: true:

2. failed to create LLB definition or no matching manifest for

• Cause: Trying to build a multi-platform image without proper setup or base image doesn’t support the architecture.

• Fix: Add --platform, and ensure you’re using images that support those architectures.

3. Cannot connect to the Docker daemon

• Cause: GitHub Actions runner doesn’t have Docker properly set up.

• Fix: Make sure you’re using a Linux runner (ubuntu-latest) and Docker is installed.

Also Read : Fixed : Planet Zoo Error Communicating with Franchise Server

🔧 Recommended Setup Example

jobs:
docker-build:
runs-on: ubuntu-latest
steps:
– uses: actions/checkout@v4

– name: Set up Docker Buildx
uses: docker/setup-buildx-action@v3
with:
install: true
use: true
driver: docker-container
driver-opts: network=host

– name: Cache Docker layers
uses: actions/cache@v4
with:
path: /tmp/.buildx-cache
key: ${{ runner.os }}-buildx-${{ github.sha }}
restore-keys: |
${{ runner.os }}-buildx-

– name: Login to DockerHub
uses: docker/login-action@v3
with:
username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}

– name: Build and push
uses: docker/build-push-action@v5
with:
context: .
push: true
tags: youruser/yourimage:latest
platforms: linux/amd64,linux/arm64
cache-from: type=local,src=/tmp/.buildx-cache
cache-to: type=local,dest=/tmp/.buildx-cache-new

🔑 Key Options for docker/setup-buildx-action