Fix: copy Dockerfile.hf to Dockerfile for HF build

Dockerfile

@@ -8,8 +8,9 @@ RUN apt-get update && apt-get install -y \
     && rm -rf /var/lib/apt/lists/*
 
 # Copy frontend static files
-COPY index.html app.js services.css ./
-
+ARG CACHEBUST=4
+COPY index.html app.js services.css about.html contact.html ./ 
+RUN ls -la /app/*.html
 # Copy backend
 COPY deepshell-backend/ ./deepshell-backend/