It's not.
It's the first thing you see in the show (IIRC)
It's foreshadowing what's going to happen more broadly. It's irrelevant that it's a ship, it's irrelevant that it's collecting specimens. It's a theme, if we're going with the "EXTREMELY ON THE NOSE" approach the show seems to be taking more broadly.
That's my guess on the name anyway - they do make sure you see the name as it goes past, which I supports this, because what, Western man/woman/nb does the word "Maginot" say to you? It says failure of defences. It says your expensive and extensive plans and preparations are worthless. It says "arrogance" and "failure to anticipate". It says you're looking in the wrong direction.
I could be totally wrong but it is a peculiar name.
There's another "On the nose" name - "Best Laid Plans" - bit of a more Banksian vibe. Or "Mice and Men" but then we'd just expect someone to get Lennie'd.
EDIT - If it's SUPER DUPER on the nose, the biggest threat will not be any of the aliens on the Maginot. It'll be the Hybrids. Because you're getting hit from an angle you weren't ready for.
EDIT EDIT - Looked to see what people online thought - a lot of people seem to be taking it as more literally meaning the containment of the species inside the ship will fail but like, duh, come on, that's not even a theme, it's Alien show, obviously that will happen. Some people do think similarly that it's theme-related though.