Update Dockerfile

Dockerfile

@@ -1,18 +1,41 @@
-# Use official Python lightweight image
+# -------------------------------
+# Lightweight Dockerfile for MCA Comment Analyzer Demo
+# -------------------------------
+
+# Use official Python slim image (lightweight)
 FROM python:3.11-slim
 
 # Set working directory
 WORKDIR /app
 
-# Copy files
-COPY app.py .
+# Prevent Python from writing pyc files
+ENV PYTHONDONTWRITEBYTECODE=1
+ENV PYTHONUNBUFFERED=1
+
+# Set Streamlit config to avoid cache warnings
+ENV MPLCONFIGDIR=/tmp/.matplotlib
+ENV STREAMLIT_BROWSER_GATHERUSAGESTATS=false
+
+# Install system dependencies for Python packages
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    build-essential \
+    git \
+    wget \
+    curl \
+    unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy requirements first (for Docker caching)
 COPY requirements.txt .
 
-# Install dependencies
+# Install Python dependencies (CPU-only)
 RUN pip install --no-cache-dir -r requirements.txt
 
-# Expose port
+# Copy app code
+COPY . .
+
+# Expose Streamlit default port
 EXPOSE 8501
 
-# Run Streamlit
-CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+# Command to run Streamlit app
+CMD ["streamlit", "run", "app.py", "--server.port=8501", "--server.address=0.0.0.0", "--server.enableCORS=false"]