Workaround/Solution found in this issue on gitlab : https://gitlab.com/gitlab-org/charts/gitlab-runner/-/issues/560#note_1a6554148a64b08308e17607cec4df501d761b4a

Mainly the solution consist of setting the poll_timeout to 3600 in the values.yaml. This solution will still log a lot of containers with unready status however at some point it will have the time to pull the image and will set the status to ready.