feat: add cloudflared tunnel service to docker-compose

.env.example

@@ -0,0 +1,2 @@
+# Put your Cloudflare Tunnel Token here
+TUNNEL_TOKEN=your_token_here

docker-compose.yml

@@ -4,3 +4,10 @@ services:
     ports:
       - "8080:80"
     restart: always
+
+  tunnel:
+    image: cloudflare/cloudflared:latest
+    restart: always
+    command: tunnel --no-autoupdate run
+    environment:
+      - TUNNEL_TOKEN=${TUNNEL_TOKEN}