Cuba has unveiled Havana’s first two modular homes using repurposed shipping containers, a critical step in a capital where once-majestic residences are collapsing. Government officials including President Miguel Díaz-Canel gathered this weekend in front of the homes awarded to two single mothers: one had spent more than a dozen years living in a shelter and the other dwelled in a single room with two teenage children, according to state media. The media reported that crews built the homes in one month using surplus material from tourism investment projects, technologies developed by Cuba’s Revolutionary Armed Forces and containers previously used to import parts from China for solar panel farms. Officials said Saturday that Cuba has a housing deficit of more than 800,000 homes. The most pressing need is in Havana. Unable to escape a collapsing home Yurieska Artunet Martí, a 29-year-old beautician who lives in the historic part of Havana, was forced to move out of her last apartment because it disintegrated.…