Update Dockerfile

Dockerfile

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+FROM python:3.9-slim
+
+WORKDIR /app
+
+RUN apt-get update && apt-get install -y \
+    build-essential \
+    curl \
+    git \
+    && rm -rf /var/lib/apt/lists/*
+
+# Set Streamlit cache dir to /tmp
+ENV STREAMLIT_HOME=/tmp/.streamlit
+ENV STREAMLIT_CONFIG_DIR=/tmp/.streamlit
+ENV XDG_CONFIG_HOME=/tmp
+
+# Install dependencies
+COPY requirements.txt .
+RUN pip3 install --no-cache-dir -r requirements.txt
+
+# Copy Streamlit app code
+COPY src/ .  # make sure your app is inside src/streamlit_app.py
+
+# Expose default Streamlit port
+EXPOSE 8501
+
+HEALTHCHECK CMD curl --fail http://localhost:8501/_stcore/health || exit 1
+
+ENTRYPOINT ["streamlit", "run", "streamlit_app.py", "--server.port=8501", "--server.address=0.0.0.0"]