Dockerfile

FROM python:3.11-slim AS python-base

# https://python-poetry.org/docs#ci-recommendations
ENV POETRY_VERSION=1.6.0
ENV POETRY_HOME=/opt/poetry
ENV POETRY_VENV=/opt/poetry-venv

# Tell Poetry where to place its cache and virtual environment
ENV POETRY_CACHE_DIR=/opt/.cache

# Create stage for Poetry installation
FROM python-base AS poetry-base

# Creating a virtual environment just for poetry and install it with pip
RUN python3 -m venv $POETRY_VENV \
    && $POETRY_VENV/bin/pip install -U pip setuptools \
    && $POETRY_VENV/bin/pip install poetry==${POETRY_VERSION}

# Create a new stage from the base python image
FROM python-base AS build

# Copy Poetry to app image
COPY --from=poetry-base ${POETRY_VENV} ${POETRY_VENV}

# Add Poetry to PATH
ENV PATH="${PATH}:${POETRY_VENV}/bin"

WORKDIR /app
COPY poetry.lock pyproject.toml ./
RUN poetry check
RUN poetry install --no-interaction --no-cache --without dev --no-root

COPY . /app

CMD [ "poetry", "run", "python", "app/main.py"]