All checks have failed

[pmandrik]

For my memory:
"Note: With the exception of GITHUB_TOKEN, secrets are not passed to the runner when a workflow is triggered from a forked repository." [0] while we need following variables to be available to build docker images and pass the tests.

username: ${{ secrets.DOCKERHUB_USERNAME }}
password: ${{ secrets.DOCKERHUB_TOKEN }}

This is a reason of "All checks have failed" for my PRs so far.

[0] https://docs.github.com/en/actions/security-guides/encrypted-secrets