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PyContainer-Handbuch/Dockerfile
2025-12-04 11:54:41 +01:00

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Docker

# --- Builder Stage ---
# This stage installs all Python dependencies into a virtual environment.
FROM python:3.11 as builder
WORKDIR /opt/venv
# Create a virtual environment
RUN python -m venv .
# Activate the virtual environment and install dependencies
COPY requirements.txt .
RUN . /opt/venv/bin/activate && pip install --no-cache-dir -r requirements.txt
# --- Runner Stage ---
# This stage creates the final, lean image.
FROM python:3.11-slim
# Create a non-privileged user for security
RUN useradd --create-home --shell /bin/bash appuser
WORKDIR /home/appuser/app
# Copy the virtual environment from the builder stage
COPY --from=builder /opt/venv /opt/venv
# Copy the application code
COPY app/ .
# Set the PATH to include the venv binaries
ENV PATH="/opt/venv/bin:$PATH"
# Expose the port the app runs on
EXPOSE 8000
# Switch to the non-privileged user
USER appuser
# Command to run the application using Gunicorn
# This is a production-ready WSGI server.
CMD ["gunicorn", "-k", "uvicorn.workers.UvicornWorker", "-w", "2", "-b", "0.0.0.0:8000", "main:app"]