Dockerfile

# Stage 1: Build stage
FROM python:3.12-slim as builder

# Set environment variables
ENV PYTHONDONTWRITEBYTECODE=1
ENV PYTHONUNBUFFERED=1

# Create a non-root user
RUN useradd -m -u 1000 user

# Set the working directory
WORKDIR /app

# Copy only the requirements file first to leverage Docker cache
COPY --chown=user ./requirements.txt /app/requirements.txt

# Install dependencies in a virtual environment
RUN python -m venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r requirements.txt

# Copy the rest of the application code
COPY --chown=user . /app

# Stage 2: Runtime stage
FROM python:3.12-slim

# Create a non-root user
RUN useradd -m -u 1000 user
USER user

# Copy the virtual environment from the builder stage
COPY --from=builder /opt/venv /opt/venv
ENV PATH="/opt/venv/bin:$PATH"

# Set the working directory
WORKDIR /app

# Copy only the necessary files from the builder stage
COPY --from=builder --chown=user /app /app

# Expose the port the app runs on
EXPOSE 7860

# Health check to ensure the application is running
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
    CMD curl -f http://localhost:7860/health || exit 1

# Command to run the application with hot reloading
CMD ["uvicorn", "src.main:app", "--host", "0.0.0.0", "--port", "7860", "--reload"]