feat: Add Docker setup and integrate a local CoTURN server for WebRTC ICE candidates.

Dockerfile

@@ -0,0 +1,7 @@
+FROM node:20-alpine
+WORKDIR /app
+COPY package*.json ./
+RUN npm install --production
+COPY . .
+EXPOSE 3000
+CMD ["npm", "start"]

docker-compose.yml

@@ -0,0 +1,21 @@
+version: "3.8"
+
+services:
+  app:
+    build: .
+    ports:
+      - "3000:3000"
+    restart: always
+
+  coturn:
+    image: coturn/coturn:latest
+    network_mode: "host"
+    restart: always
+    command: >
+      -n
+      --log-file=stdout
+      --min-port=49152
+      --max-port=49252
+      --realm=yourdomain.com
+      --user=myuser:mypassword
+      --stale-nonce

public/app.js

@@ -9,7 +9,12 @@ let activeStream;
 
 const config = {
     iceServers: [
-        { urls: "stun:stun.l.google.com:19302" }
+        { urls: "stun:localhost:3478" },
+        {
+            urls: "turn:localhost:3478",
+            username: "myuser",
+            credential: "mypassword"
+        }
     ]
 };
 

public/viewer.js

@@ -5,7 +5,12 @@ const overlay = document.getElementById('overlay');
 let peerConnection;
 const config = {
     iceServers: [
-        { urls: "stun:stun.l.google.com:19302" }
+        { urls: "stun:localhost:3478" },
+        {
+            urls: "turn:localhost:3478",
+            username: "myuser",
+            credential: "mypassword"
+        }
     ]
 };