Hi, Seems like the bash test is being used in place of the GNU coreutils test. For instance, invoking test --version or test --help should print relevant information, but nothing is printed. As stated in the coreutils documentation, "Due to shell aliases and built-in test functions, using an unadorned test interactively or in a script may get you different functionality than that described here. Invoke it via env (i.e., env test …) to avoid interference from the shell." These commands did not work for me, either on the container or on my linux machine. find -name test on / doesn't reveal a separate test program in the ubuntu docker container either. The next steps would be to grab a GNU test binary (or compile it from [GitHub]⬈) and try the commands, but it would be a bit involving to do on my system at this time, so Ill have to do it later this week.