Coolest feature is per container socks5 support so each container can send traffic through a different socks 5 server. Any VPN offering socks5 on their gateways should work. I'm using IVPN which expose socks5 on each of their WireGuard servers - there is demo on their blog -
https://www.ivpn.net/blog/socks5-proxies-app-based-vpn-tunne...