It is possible, no matter what your friendly AI chatbot tells you
It is well documented in official docs, this setting is available on the same level as image, command, and args:
workingDirstringContainer's working directory. If not specified, the container runtime's default will be used, which might be configured in the container image. Cannot be updated.
and there are answers at StackOverflow and medium. So please correct your answers next time, dear AI ;)