In Prey, Morgan Yu has to eject the data vault and himself into space, in order to find an alternative way to unlock the shut down initiated by Director Alex Yu.
When out in space, Morgan receives a call from chief Sarah, who tells Morgan to go to cargo bay. But there is now a breach in Cargo Bay and Morgan cannot enter the cargo bay staging area by normal means.
However, there is a certain Dr Igwe stranded in space in a container. Rescue him and get into the Cargo Bay.
Then get the code from Dr Igwe, and then use it to open the shipping container.
Once inside the cargo bay staging area, go ahead and explore the area, before heading to find Chief Sarah.