Dockerfile

# Use an official lightweight Python image.
# 3.11 is stable and faster than previous versions.
FROM python:3.11-slim

# Set environment variables
# PYTHONDONTWRITEBYTECODE: Prevents Python from writing pyc files to disc
# PYTHONUNBUFFERED: Prevents Python from buffering stdout and stderr
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Set the working directory in the container
WORKDIR /app

# Copy the requirements file first to leverage Docker cache
COPY requirements.txt .

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

# Copy the rest of the application code
COPY . .

# Expose the port Streamlit runs on
EXPOSE 7860

# Healthcheck to ensure the container is responsive
HEALTHCHECK CMD curl --fail http://localhost:7860/_stcore/health || exit 1

# Command to run the application
# server.address=0.0.0.0 is crucial for Docker networking
CMD ["streamlit", "run", "app.py", "--server.address=0.0.0.0", "--server.enableCORS=false", "--server.enableXsrfProtection=false"]