bcl2fastq and small test data

I am preparing a Docker image for running bcl2fastq 2.19. I would like to create an integration test using this Docker container with some small BCL data.

I've tried https://github.com/roryk/tiny-test-data/tree/master/flowcell but 2.19 hangs on it. Though honestly I'd like to try to validate the Docker image with BCL and CBCL (the new novaseq format) files somehow.

Has anyone else in the community tried tackling small test files around the BCL preprocessing? Very similarly how this test data is helpful for the rest of the pipeline? Picard has some test data too, though very specific to its test-cases.