Update Dockerfile

Dockerfile

@@ -5,9 +5,12 @@ FROM python:3.9-slim
 ENV PYTHONUNBUFFERED=1
 ENV LANG C.UTF-8
 
-# Install required system dependencies (for Git, and any other build dependencies)
+# Install required system dependencies (for Git, build tools, and others)
 RUN apt-get update && apt-get install -y \
     git \
+    build-essential \
+    g++ \
+    python3-dev \
     && rm -rf /var/lib/apt/lists/*
 
 # Upgrade pip to a compatible version to handle metadata issues