Fix: set default GATEWAY_TOKEN and auth config

Dockerfile

@@ -12,6 +12,7 @@ RUN mkdir -p /root/.openclaw
 # Set up environment for Hugging Face Spaces
 ENV PORT=7860
 ENV OPENCLAW_GATEWAY_MODE=local
+ENV GATEWAY_TOKEN=openclaw
 
 # Expose the port (Hugging Face default)
 EXPOSE 7860
@@ -25,6 +26,10 @@ if [ ! -f /root/.openclaw/openclaw.json ]; then\n\
   "gateway": {\n\
     "mode": "local",\n\
     "port": 7860,\n\
+    "auth": {\n\
+      "mode": "token",\n\
+      "token": "openclaw"\n\
+    },\n\
     "controlUi": {\n\
       "allowInsecureAuth": true\n\
     }\n\