Unable to run train-model.perl

[toralero]

Hi! first of all great work with this its been much easier to use and implement than the linux side manual compilation where the documentation is (imo) a big mess.

I however got stuck on training my model and was wondering if you encountered this issue
"When running scripts which require -external-bin-dir, for example train-model.perl, -external-bin-dir should take the argument /opt/moses_tools'

So I'm running train-model.perl on inside the docker bash it is unable to recognise the content of opt/moses_tools
The error message specifically is "Using SCRIPTS_ROOTDIR: /opt/moses/scripts
Using single-thread GIZA
using gzip
ERROR: Cannot find mkcls, GIZA++/mgiza, & snt2cooc.out/snt2cooc in /opt/moses_tools.
You MUST specify the parameter -external-bin-dir at /opt/moses/scripts/training/train-model.perl line 491."

However I am quite sure that moses_tools has the correct tools i have even tested them out individually and checked the content of the folder
root@235824dd6bb2:/opt# cd moses_tools
root@235824dd6bb2:/opt/moses_tools# ls
d4norm merge_alignment.py mkcls snt2cooc snt2plain
hmmnorm mgiza plain2snt snt2coocrmp symal"