PotreeConverter command unable to run from Java on Linux

[mghildiy]

In my java app I want to run potree converter using ProcessBuilder. I am able to do so successfully on windows:

String[] potreeConverterCommand = {
                    "cmd.exe", "/c",
                    potreeConverterPath,
                    pdalOutput, "-o", potreeOutputPath,
                    "--generate-page", "index"
            };

ProcessBuilder processBuilder = new ProcessBuilder(potreeConverterCommand);
Process process = processBuilder.start();
int exitCode = process.waitFor();
logger.info("Exit code for potreeconverter:"+exitCode);

For docker container, I replace "cmd.exe", "/c" with "/bin/bash", "-c". But things don't work. It keeps giving exitcode 127.
potreeConverterPath points to PotreeConverter script, and it exists as checked by:

Files.exists(Paths.get(potreeConverterPath))

pdalOutput points to input .las file and this too exists.

potreeOutputPath is the directory where I want PotreeConverter to write its output, and its parent directory too exists.

Am I missing something in context of linux?