"Error: Unexpected token 'j', "json" is not valid JSON"

[matthinrichsen-wf]

Contributing guidelines

• I've read the contributing guidelines and wholeheartedly agree

I've found a bug, and:

• The documentation does not mention anything about my problem
• There are no open or closed issues that are related to my problem

Description

Using v3.6.0 in GHA errors with:

"Error: Unexpected token 'j', "json" is not valid JSON"

Expected behaviour

It should not produce this error

Actual behaviour

GHA step fails

Repository URL

No response

Workflow run URL

No response

YAML workflow

jobs:
  build:
    name: Build
    steps:
      - name: Checkout Repo
        uses: actions/checkout@v4

      - name: prepare build action
        uses: docker/setup-buildx-action@v3

Workflow logs

No response

BuildKit logs

No response

Additional info

Pinning to v3.5.0 resolves the issue

[jrilettovo]

Seconding this, exact same issue.

From pinning docker/setup-buildx-action@v3 to docker/setup-buildx-action@v3.5.0 resolves.

Issue with latest release.

[crazy-max]

Thanks for reporting, can someone gives the output of docker context inspect --format=json default please? And also run the workflow with debug enabled for docker/setup-buildx-action@v3.6.0? Thanks.

In the meantime I pinned v3 to v3.5.0.