Update Dockerfile

Dockerfile

@@ -1,29 +1,41 @@
 # ── Stage 1: Builder ─────────────────────────────────────────
-FROM python:3.11-slim AS builder
+FROM ubuntu:22.04 AS builder
+
+# Install C++ build tools and CMake
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    cmake \
+    && rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
-COPY requirements.txt .
-RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
+# Copy all source files
+COPY . .
+
+# Configure and build the C++ project
+# This assumes your CMakeLists.txt is set up correctly in the root
+RUN cmake -B build -S . -DCMAKE_BUILD_TYPE=Release
+RUN cmake --build build -j$(nproc)
 
 # ── Stage 2: Runtime ─────────────────────────────────────────
-FROM python:3.11-slim
+FROM ubuntu:22.04
 
-# HF Spaces runs as user 1000
+# HF Spaces requires the app to run as user 1000
 RUN useradd -m -u 1000 appuser
 
 WORKDIR /app
 
-# Copy dependencies
-COPY --from=builder /install /usr/local
+# Copy the compiled binary from the builder stage
+# IMPORTANT: Replace "YOUR_EXECUTABLE_NAME" with the actual target name from your CMakeLists.txt
+COPY --from=builder --chown=appuser:appuser /app/build/YOUR_EXECUTABLE_NAME ./app_server
 
-# Copy source
-COPY --chown=appuser:appuser . .
+# Copy your frontend file so the C++ server can serve it
+COPY --chown=appuser:appuser index.html .
 
 USER appuser
 
 # HF Spaces exposes port 7860
 EXPOSE 7860
 
-# Start with uvicorn, binding to 0.0.0.0:7860
-CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860", "--workers", "1", "--ws", "websockets"]
+# Start the C++ executable
+CMD ["./app_server"]