On Windows/Mac the serial port cannot be access directly inside
docker container. This is already mentioned in the documentation.
This expands the documentation for steps which can be used to overcome
this limitation by using remote serial port access via telnet protocol.
Closes https://github.com/espressif/esp-idf/issues/10617
Signed-off-by: Frantisek Hrbata <frantisek.hrbata@espressif.com>