[WIP] Improvment Script

[mr-bolle]

• [x] Server Protokoll for ovpn_genconfig (tcp / udp)
• [x] set DNS during ovpn_genconfig -n
• [x] remove ip-pihole.sh
• [x] move to own repository (docker-compose bad idea)
• [ ] PEM ca.key password as user entry variable -- not so easy https://stackoverflow.com/questions/22415601/using-easy-rsa-how-to-automate-client-server-creation-process https://github.com/kylemanna/docker-openvpn/issues/181#issuecomment-262958224 https://github.com/kylemanna/docker-openvpn/blob/master/bin/ovpn_initpki -- easyrsa build-ca
• [ ] password for OpenVPN Configuration optional easyrsa build-client-full CLIENTNAME nopass
• [x] ~~docker-compose.yml adjustment pi-hole enviroment ex. adjust .env over script - relative path~~
• [x] set the sub-network if this don't exist
• [ ] change the Pi-Hole Container IP and adjust sub-network
• [ ] adjust OpenVPN firewall.sh if external Port != 1194 sample-config-files/firewall.sh
• [ ] add revers proxy traefik, and use default https Port 443
• [x] possibility to run this container on a Raspberry Pi #3
• [ ] create Menu Bash Script for easy Setup with whiptail
• [ ] add alternative OpenVPN with PiVPN Script (reason better maintenance) :construction: