Deb: create Ubuntu 20.04 tarball and deb

builder/test-deb

@@ -3,6 +3,8 @@
 set -e
 
 cd "$(dirname "$0")"
+. ./os_ver_cli.sh
 
-docker build -t kasmvnctester-deb:18.04 -f dockerfile.ubuntu1804.deb.test .
+docker build -t kasmvnctester-deb:$os_ver \
+  -f dockerfile.${os}${os_ver_dockerfile}.deb.test .
 #docker run -it -p 443:8443 --rm -e "VNC_USER=username" -e "VNC_PW=password123" kasmvnctester-deb:18.04