Dockerfile

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

# Prevent interactive prompts
ENV DEBIAN_FRONTEND=noninteractive

# Set working directory
WORKDIR /app

# -----------------------------
# System dependencies for NLTK, Matplotlib, WordCloud
# -----------------------------
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 and install Python packages
# -----------------------------
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Download NLTK stopwords
RUN python -m nltk.downloader stopwords

# -----------------------------
# Copy source code
# -----------------------------
COPY . .

# Expose Streamlit port
EXPOSE 7860

# Set Streamlit environment variables
ENV STREAMLIT_SERVER_PORT=7860 \
    STREAMLIT_SERVER_ADDRESS=0.0.0.0 \
    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

# -----------------------------
# Command to run Streamlit
# -----------------------------
CMD ["streamlit", "run", "app.py"]