Does not build ! Wrong docker build command and file/folder existence checks

I tried the setup script but I could not build the Dockerfile.

*) The build command is wrong: `docker build -t innovativeinventor/docker-pivpn:$tag $tag/Dockerfile`
it should be `docker build -f $tag/Dockerfile -t innovativeinventor/docker-pivpn:$tag .`

*) The checks for the existence of Dockerfile and `setup_repo() { if [ -e docker-pivpn` are in wrong folders, also the git clone.
I can try to fake that with creating a Dockerfile in the setup.sh folder and a docker-pivpn folder inside.

*) install.sh is called 2 times !

*) the sed --> Default.txt fails, that file is not in that folder