passteque/gluetun ? reverse-engineered prompt

Build me a lightweight Docker based VPN client that can connect to a bunch of popular VPN providers and keep all traffic inside the tunnel.

I want it to be easy to run in a container, with support for OpenVPN and WireGuard, built in DNS over TLS, a strict firewall kill switch, and simple proxy options like HTTP, SOCKS5, and Shadowsocks so other apps can use the VPN container too. It should also let me choose a few VPN settings like protocol and server, and work well with other containers and even LAN devices if needed.

Keep it small and reliable, with a clean setup that feels like a practical all in one VPN box. If you need to check current provider setup details or docs, look them up online.