Fix Dockerfile: use PORT=7860 for HF Spaces compatibility

Dockerfile

@@ -1,31 +1,22 @@
 FROM node:20-slim
-RUN apt-get update && apt-get install -y expect socat && rm -rf /var/lib/apt/lists/*
+
+RUN apt-get update && apt-get install -y git python3 make g++ && rm -rf /var/lib/apt/lists/*
+
+# Install 9router from npm
 RUN npm install -g 9router
 
-ENV TERM=dumb
-ENV NO_COLOR=1
-ENV FORCE_COLOR=0
-ENV PORT=20128
+# HF Spaces requires port 7860
+ENV PORT=7860
 ENV HOSTNAME=0.0.0.0
 ENV NEXT_PUBLIC_BASE_URL=https://gunnybd01-9router.hf.space
 ENV INITIAL_PASSWORD=123456
+ENV TERM=dumb
+ENV NO_COLOR=1
+ENV FORCE_COLOR=0
 
 EXPOSE 7860
 
-RUN cat > /start.exp << 'EOF'
-log_user 1
-set timeout 120
-spawn env TERM=dumb NO_COLOR=1 FORCE_COLOR=0 9router
-expect {
-    "20128" {
-        puts "MATCHED! Sending enter..."
-        send "\n"
-        sleep 9999
-    }
-    timeout {
-        puts "TIMEOUT - no match"
-    }
-}
-EOF
+# start.sh: auto-answer any initial setup prompts then keep running
+RUN printf '#!/bin/sh\nset -e\nexec 9router\n' > /start.sh && chmod +x /start.sh
 
-CMD ["/bin/sh", "-c", "expect /start.exp & sleep 60 && socat TCP-LISTEN:7860,fork TCP:localhost:20128"]
+CMD ["/bin/sh", "/start.sh"]