1- I already did the assignment but I need someone to check about the async or n

1- I already did the assignment but I need someone to check about the async or not the communication.
2- To do the test file because I could not do it it has to be as a log file to test the scenario.
3- Help me with the docker question. 4- I went to do the work on Zoom call if it is possible.
I have attached the requirements the implementation work good I need to check if it asyn or syn + test file with logs+ Docker