No, those are different files. requirements-gpu.txt got removed in the 2.2.1 release, and I am trying to find out why for you. Thank you for your patience.
According to the TLS engineer, "The requirement-gpu.txt is remove in 2.2.1 is because the docker setup only support TLS run In CPU." Sorry about the inconvenience...
Currently, TLS only support training in CPU. Sorry that we could not provide the requirements-gpu.txt, it will causes the setup not compatible. Sorry for the inconvenience.