BWTA2 cache files not provided

[Bytekeeper]

expected behaviour

BWTA2 cache files being present

actual behaviour

BWTA2 cache directory being empty

steps to reproduce

scbw.play --install
ls .scbw/bwapi-data/BWTA2

operating system

Distributor ID: Ubuntu
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Codename: bionic

output of command docker version:
Client:
Version: 18.09.0
API version: 1.39
Go version: go1.10.4
Git commit: 4d60db4
Built: Wed Nov 7 00:49:01 2018
OS/Arch: linux/amd64
Experimental: false

Server: Docker Engine - Community
Engine:
Version: 18.09.0
API version: 1.39 (minimum version 1.12)
Go version: go1.10.4
Git commit: 4d60db4
Built: Wed Nov 7 00:16:44 2018
OS/Arch: linux/amd64
Experimental: false

scbw version

output of command scbw.play -v
1.0.4