Update Dockerfile

Dockerfile

@@ -1,10 +1,10 @@
-# Use full Debian-based Python image instead of slim
+# Use full Python image to avoid missing build dependencies
 FROM python:3.11
 
 # Set working directory
 WORKDIR /app
 
-# Install system dependencies needed for building Python packages
+# Install system dependencies required for building Python packages
 RUN apt-get update && apt-get install -y \
     build-essential \
     libffi-dev \