fatal: could not read Username for 'https://github.com': No such device or address

Behaviour

It seems breaking changes was introduced to tag v2 this weekend. Locking action to 1b7db3498a1941bc89504b474567da7ddc1341c solves the issue.

Steps to reproduce this issue

1. Use docker/build-push-action@v2 with attached workflow file
2. Trigger action

Expected behaviour

It should work as before the weekend using the same tag (@v2)

Actual behaviour

Build fails

Configuration

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

name: "Docker Build/Push and Deploy to k8s"

on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

env:
  REGISTRY: private.registry.tld
  IMAGE_NAME: myrepo

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v1
        id: buildx
        with:
          install: true

      - name: Cache Docker layers
        uses: actions/cache@v2
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-

      - uses: actions/checkout@v2

      - uses: docker/login-action@v1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ secrets.registry_username }}
          password: ${{ secrets.registry_password }}

      - name: Build and push
        uses: docker/build-push-action@v2
        with:
          # Only push if we are on the master branch
          push: ${{ endswith(github.ref, 'master') }}
          tags: "${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ github.sha }}"
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache

Logs

Buildx version: 0.4.2
🏃 Starting build...
/usr/bin/docker buildx build --tag plattform.azurecr.io/myrepo/master:3b9518b1d1444f6307f491a4d8e59692c3df21ea --iidfile /tmp/docker-build-push-AmL3yR/iidfile --cache-from type=local,src=/tmp/.buildx-cache --cache-to type=local,dest=/tmp/.buildx-cache --secret id=GIT_AUTH_TOKEN,src=/tmp/docker-build-push-AmL3yR/tmp-3255-cPRnHGzuxj5J --file ./Dockerfile https://github.com/myorg/myrepo.git#pull/5/merge
time="2020-10-05T08:16:01Z" level=warning msg="invalid non-bool value for BUILDX_NO_DEFAULT_LOAD: "
time="2020-10-05T08:16:01Z" level=warning msg="No output specified for docker-container driver. Build result will only remain in the build cache. To push result image into registry use --push or to load image into docker use --load" 
#1 [internal] load git source https://github.com/myorg/myrepo.git#pull/...
#1 0.085 Initialized empty Git repository in /var/lib/buildkit/runc-overlayfs/snapshots/snapshots/1/fs/
#1 0.641 fatal: could not read Username for 'https://github.com': No such device or address
#1 ERROR: failed to fetch remote https://github.com/myorg/myrepo.git: exit status 128 
------
 > [internal] load git source https://github.com/myorg/myrepo.git#pull/5/merge:
------
failed to solve: rpc error: code = Unknown desc = failed to solve with frontend dockerfile.v0: failed to read dockerfile: failed to load cache key: failed to fetch remote https://github.com/myorg/myrepo.git: exit status 128 
Error: The process '/usr/bin/docker' failed with exit code 1

[ystxn]

this issue is closed but the error still exists on docker/build-push-action@v2 today

[stigok]

Pipeline works correctly using context: . as described.