Poetry Flask Docker File

poetry_flask.dockerfile

# Example flask app folder structure
#
# ├── app
# │   ├── app.py
# │   └── __init__.py
# ├── Dockerfile
# ├── .dockerignore
# ├── poetry.lock
# └── pyproject.toml

# alpine is a small image
FROM python:3.10-alpine

# Don't run as root
RUN adduser -D appuser && \
    # Set the working directory in the container
    mkdir -p /home/appuser/app && \
    chown appuser:appuser /home/appuser/app && \
    # Use wget instead of curl since curl is external package in alpine
    # https://python-poetry.org/docs/#installation
    wget -O get-poetry.py https://install.python-poetry.org && \
    POETRY_HOME=/home/appuser/.poetry python3 get-poetry.py && \
    rm get-poetry.py

USER appuser

# Add Poetry to PATH
ENV PATH="/home/appuser/.poetry/bin:${PATH}"

# Install dependencies
COPY poetry.lock pyproject.toml ./
RUN poetry install

# Copy the rest of your application into the Docker image
COPY ./app /home/appuser/app

# Run your Flask application using Gunicorn server for production
CMD ["poetry", "run", "gunicorn", "-w", "4", "-b", "0.0.0.0:5000", "app:app"]