Dockerfile

# Stage 1: Build stage
FROM python:3.9.16-slim AS builder

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

# Create and set the working directory
WORKDIR /app

# Copy the requirements file to the container
COPY requirements.txt /app/

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

# Stage 2: Final stage
FROM python:3.9.16-slim

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

# Create and set the working directory
WORKDIR /app

# Copy installed packages from the builder stage
COPY --from=builder /usr/local/lib/python3.9/site-packages /usr/local/lib/python3.9/site-packages
COPY --from=builder /usr/local/bin /usr/local/bin

# Copy the application files
COPY . /app/

# Expose the port the app will run on
EXPOSE 3301

# Use a non-root user for better security
RUN adduser --disabled-password --gecos '' appuser && chown -R appuser /app
USER appuser

# Command to run the FastAPI app using Uvicorn
CMD ["python3", "main.py"]