“My life is dogshit.” Zain El Hajj, the young protagonist of Nadine Labaki’s third feature Capernaum, which competed for the Foreign Language prize at last week’s Oscars, is not having such a good time of it. Twelve years old with an asterix (as a child to undocumented parents, there’s no birth certificate for confirmation), Zain endures a monotonous, shabby, profoundly unnourishing childhood in Beirut’s dilapidated urban sprawl. Played by Zain Al Rafeea, a Syrian refugee himself, the young lad lives with his large family in a rotting apartment owned by their cousin Assad, in whose shop some of the kids spend…