Dockerfile

# ✅ Base image with Python 3.9 slim
FROM python:3.9-slim

# Prevent interactive prompts during package installs
ENV DEBIAN_FRONTEND=noninteractive

# Set working directory
WORKDIR /app

# ✅ Install system dependencies (needed for matplotlib, wordcloud etc.)
RUN apt-get update && apt-get install -y \
    gcc \
    g++ \
    wget \
    curl \
    git \
    build-essential \
    libglib2.0-0 \
    libsm6 \
    libxrender1 \
    libxext6 \
    libgl1 \
    && rm -rf /var/lib/apt/lists/*

# ✅ Copy requirements.txt first (cache optimization)
COPY requirements.txt .

# ✅ Install Python dependencies
RUN pip install --no-cache-dir -r requirements.txt

# ✅ Download NLTK stopwords at build time
RUN python -m nltk.downloader stopwords

# ✅ Copy the source code into container
COPY . .

# ✅ Expose Streamlit port
EXPOSE 7860

# ✅ Environment variables for Streamlit
ENV STREAMLIT_SERVER_PORT=7860 \
    STREAMLIT_SERVER_ADDRESS=0.0.0.0 \
    STREAMLIT_BROWSER_GATHERUSAGESTATS=false

# ✅ Run Streamlit app
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]