POSTGRES_DB=nexavpn POSTGRES_USER=nexavpn POSTGRES_PASSWORD=change-me DATABASE_URL=postgres://nexavpn:change-me@postgres:5432/nexavpn?sslmode=disable HTTP_ADDRESS=:8080 APP_ENV=production JWT_SECRET=replace-with-a-long-random-secret JWT_ISSUER=nexavpn ACCESS_TOKEN_TTL_SECONDS=900 REFRESH_TOKEN_TTL_SECONDS=2592000 DEFAULT_DNS_SERVERS=10.20.0.53 DEFAULT_VPN_CIDR=100.96.0.0/24 DEFAULT_GATEWAY_ENDPOINT=vpn.example.com:51820 DEFAULT_GATEWAY_PUBLIC_KEY=replace-me