Realistically, if those containers weren't secured properly, there wouldn't just be 1 small red light to warn you, there would be other visual clues (blinking light, computer screens with warnings) and audio cues too
Not just that but, like, lady, there is an escaped alien creature
in your sandwich, and our response is, uh, whoops, let's just pop it back in its vivarium then! There's no protocol, no incident procedure, no nothing, for a xenomorph
breaking containment? Naaaah, ten second rule, innit. Just shrug and move on.
This is another example of the show writing itself into unnecessary corners. The crew is moronic and the containment procedures so woefully inadequate, I suspect, because if the opposite were the case it would be more difficult to devise a way for the xenos to escape. Except it wouldn't (you're in space where there's plenty of debris to punch holes through your ship, oh and there is a saboteur aboard) so what are we looking at here? What's the excuse for why the characters are written like this? Laziness? Lack of diligence? Why, in modern TV and cinema, is it so often the case that everyone brings their A-game except the writers? That seems awfully unfair on everyone else involved in the production. Not embarrassed? I'd be embarrassed.
"They're all dead." Good! I shouldn't feel like that. The crew should be competent, make all the right decisions, making me invested, and be wiped out anyway, underlining the extreme nature of the threat. But no just have the chief engineer standing around in a corridor sipping a drink when the ship is on a collision course with a planet and in dire need of repair. No rush. Something has broken out of a cryo-bed? Let's saunter down and take a squiz, oh look something's burst out of him aah well what are you gonna do? A big ol alien behind me? I'll just out-run it then we can all watch it do a funny little shuffle walk like it is in a musical or something.
I'm going to miss this nonsense when it is over.