Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Regression: Multi-platform builds broken

See original GitHub issue

Troubleshooting

Before submitting a bug report please read the Troubleshooting doc.

Behaviour

Steps to reproduce this issue

Attempt to build for multiple platforms using the platforms directive
Attempt to push the results to ghcr.io

Expected behaviour

Images for multiple platforms will be pushed.

This was the observed behavior until about 24 hours ago, when multi-platform builds broke.

Actual behaviour

All but one of the platforms will fail with an error similar to the following:

#13 ERROR: unexpected status: 401 Unauthorized
------
 > exporting to image:
------
error: failed to solve: unexpected status: 401 Unauthorized
Error: buildx failed with: error: failed to solve: unexpected status: 401 Unauthorized

Replacing the platforms directive with a single platform resolves the issue, regardless of which platform is chosen.

I’m not sure why it’s a 401 error; that may indicate the issue is specific to ghcr.io, but I’m not sure.

Configuration

Repository URL (if public): private
Build URL (if public): private

name: "Docker"

on:
  push:
    tags:
      - "v*"

jobs:
  push:
    runs-on: "ubuntu-latest"

    steps:
      - uses: "actions/checkout@v2"
      - uses: "docker/setup-qemu-action@v1"
      - uses: "docker/setup-buildx-action@v1"

      - name: "Get docker info"
        run: |
          echo "Actor: ${{ github.actor }}"

      - name: "Log into GitHub Container Registry"
        if: "github.event_name != 'pull_request'"
        uses: "docker/login-action@v1"
        with:
          registry: "ghcr.io"
          username: "${{ github.actor }}"
          password: "${{ secrets.GITHUB_TOKEN }}"

      - name: "Build and push"
        uses: "docker/build-push-action@v2"
        with:
          context: "."
          platforms: "linux/amd64,linux/arm64"
          push: ${{ github.event_name != 'pull_request' }}
          tags: ghcr.io/foo/bar:latest