OP says they have used docker for a long time, and they want a deep dive. I think it's safe to say they do want a deep dive but might be forgetting to mention

OP says they have used docker for a long time, and they want a deep dive. I think it's safe to say they do want a deep dive but might be forgetting to mention some of their reasons. For someone familiar with docker, maybe it is good to start from the other side and work backwards.