Update Dockerfile

Dockerfile

@@ -1,21 +1,38 @@
 FROM python:3.13.5-slim
 
+# Set working directory
 WORKDIR /app
 
-RUN apt-get update && apt-get install -y \
+# Install system dependencies (for building Python packages)
+RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
+    python3-dev \
     curl \
     git \
     && rm -rf /var/lib/apt/lists/*
 
-COPY requirements.txt ./
-COPY src/ ./src/
+# Upgrade pip first
+RUN pip install --no-cache-dir --upgrade pip setuptools wheel
+
+# Copy requirements first (for caching)
+COPY requirements.txt .
 
+# Install Python dependencies
+RUN pip install --no-cache-dir -r requirements.txt
 
-RUN pip3 install -r requirements.txt
+# Copy app source code
+COPY src/ ./src/
 
+# Expose Streamlit default port
 EXPOSE 8501
 
-HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health
+# Healthcheck (give Streamlit time to boot)
+HEALTHCHECK --interval=30s --timeout=10s --start-period=30s --retries=3 \
+  CMD curl --fail http://localhost:8501/_stcore/health || exit 1
+
+# Run as non-root user for security (optional but good practice)
+RUN useradd -m streamlit
+USER streamlit
 
-ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]
+# Entrypoint to run Streamlit app
+ENTRYPOINT ["streamlit", "run", "src/streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]