Configure self-hosted STUN for remote WebRTC

.env.example

@@ -1,7 +1,10 @@
 # docker compose 变量(复制为项目根 .env)。公网 WebRTC 需配合 --profile remote。
-PUBLIC_IP=182.92.86.220
+# PRIVATE_IP 是 `ip -4 route get 1.1.1.1` 输出中 src 后的地址。
+PUBLIC_IP=118.89.89.89
+PRIVATE_IP=10.0.0.8
 TURN_SECRET=change-me-to-a-long-random-string
-TURN_URLS=turn:182.92.86.220:3478?transport=udp,turn:182.92.86.220:3478?transport=tcp
+STUN_URL=stun:118.89.89.89:3478
+TURN_URLS=turn:118.89.89.89:3478?transport=udp,turn:118.89.89.89:3478?transport=tcp
 S3_ACCESS_KEY=rustfsadmin
 S3_SECRET_KEY=rustfsadmin
 S3_BUCKET=ai-video