"The RWG [container] terminal [in Rotterdam, 2.35m teu capacity], with its fully automated cranes, is operated by a team of no more than 10 to 15 people on a day-to-day basis. Most of its 180 employees aren’t longshoremen, but IT specialists” (Journal of Commerce, 4 Feburary 2016).
The managing director says: “We are in fact, an IT company that handles containers”.
Compare: in 1900 the Port of London was the busiest port in the world. It had 50,000 workers shifting cargo mostly by hand, as they had done for thousands of years. It handled 7 million tons of cargo.