No, it was possibly a reference to the D23 (Disney) fan club.
The container name was Deck 23
But as you can see from the image D was highlighted to make it D23.The LOST room number reference seems completely coincidental. Even screenrant speculated the same ( Refer Easter egg no 17).
By Jim Frye from d23.com:
Marvel’s Captain America: Civil War is shaping up to be one of the
biggest films of the summer, bringing together Captain America and
Iron Man in a battle of wills—and fists! But D23 fans watching the
film will get a special treat—an exclusive D23 Easter Egg! Kevin
Feige, producer and president, Marvel Studios, is a Disney super-fan,
not to mention a big fan of D23. He showed his love during the Captain
America: Civil War sneak peek at D23 Expo last year by pointing out a
special “Easter egg” in the film: During a scene where Sebastian
Stan’s character, Bucky Barnes, aka The Winter Soldier, is being
interrogated, the letter “D” and the numbers “23” are prominently
displayed on the metallic doors to the room where Bucky is being held.
So we asked Feige, is that something that’s actually in the film, or
was it created just for D23 Expo? “That’s in the movie, baby!”
exclaims Feige, saying it was a deliberate shout-out to D23 fans.
“That’s exactly what it was,” he says. “That’s why we showed it to
them.” Be on the lookout for this cool D23 Easter Egg when Captain
America: Civil War opens on May 6.