check why some tests fail on Github

[idanmiara]

test_build_create_and_pull and test_valid_image_build succeeds locally for me but fails on Github. I marked them with xfail in #149

[idanmiara]

https://github.com/biocatchltd/yellowbox/actions/runs/19343431484/job/55337428901?pr=146
https://github.com/biocatchltd/yellowbox/actions/runs/19343529389/job/55337774562?pr=147
https://github.com/biocatchltd/yellowbox/actions/runs/19344655427/job/55341770901?pr=147
https://github.com/biocatchltd/yellowbox/actions/runs/19404034216/job/55515912496?pr=147