Dockerfile

FROM python:3.12-slim

# Install uv directly from its official image
COPY --from=ghcr.io/astral-sh/uv:0.9.26 /uv /bin/uv

# Set the working directory inside the container
WORKDIR /app

# Copy dependency files first.
# This allows Docker to cache the installed packages layer.
# If you change your code but not your dependencies, this step will be skipped.
COPY pyproject.toml uv.lock ./

# Install dependencies into the system python environment.
RUN uv sync --frozen --no-dev

# This makes 'gunicorn' and 'flask' available globally in the container
ENV PATH="/app/.venv/bin:$PATH"

# Copy the rest of the application code
COPY . .

# Expose the port the app runs on
EXPOSE 5000

# Run the production server
# -w 4: Run 4 worker processes
# -b 0.0.0.0:5000: Listen on all interfaces on port 5000
CMD ["gunicorn", "-w", "4", "-b", "0.0.0.0:5000", "--access-logfile", "-", "application:app"]