Photo used for illustrative purpose. General view of a stock yard of DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018.

The corporate logo of DP World is seen at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018. REUTERS/Hamad I Mohammed. Image used for illustrative purpose.

A terminal tractor passes in front of a stock yard of DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018.

Cars approach the main entrance of DP World at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018.

Image used for illustrative purpose. Terminal tractors line up to offload their containers into a cargo ship at DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018.

General view of a stock yard of DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018. Image for illustrative purposes.

A security patrol boat is seen in front of Terminal Four at DP World at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018. Image for illustrative purposes.

Terminal tractors line up as they are loaded with containers from a cargo ship at DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018. Picture taken December 27, 2018. REUTERS/ Hamad I Mohammed - RC12D2205330

Terminal tractors line up as they are loaded with containers from a cargo ship at DP World's fully automated Terminal 2 at Jebel Ali Port in Dubai, United Arab Emirates, December 27, 2018. Image used for illustrative purpose.