Workaround for Docker push error "405 Method Not Allowed" using BuildKit 0.11

Issue

Docker pushes from GitHub Actions using https://github.com/docker/build-push-action are failing due to a recent change in the underlying BuildKit 0.11 enabling "provenance" by default.

Resolution

The workaround for this is to configure the failing GitHub Action step to use provenance: false , for example:

      - name: Build and push
        uses: docker/build-push-action@v3
        with:
          push: true
          tags: registry.heroku.com/<app_name>/web
          provenance: false

This provenance setting applies to any customers using BuildKit 0.11, which we only know of coming from GitHub Actions at this time.