Update Dockerfile

Dockerfile

@@ -1,5 +1,7 @@
+# Use Python 3.12 slim
 FROM python:3.12-slim
 
+# Install system dependencies
 RUN apt-get update && apt-get install -y \
     build-essential \
     make \
@@ -10,8 +12,10 @@ RUN apt-get update && apt-get install -y \
     findutils \
     && rm -rf /var/lib/apt/lists/*
 
+# Set working directory
 WORKDIR /app
 
+# Copy ALL files from the repository
 COPY . .
 
 # ============================================================
@@ -59,7 +63,7 @@ RUN chmod -R 777 /app/engine_bin
 RUN if [ -f /app/server/requirements.txt ]; then \
       pip install --no-cache-dir -r /app/server/requirements.txt; \
     else \
-      pip install --no-cache-dir fastapi "uvicorn[standard]" websockets python-chess pydantic; \
+      pip install --no-cache-dir fastapi "uvicorn[standard]" websockets python-chess pydantic psutil; \
     fi
 
 # Explicit Paths