Dockerfile

FROM python:3-alpine as base

FROM base as builder

    # python
ENV PYTHONUNBUFFERED=1 \
    # prevents python creating .pyc files
    PYTHONDONTWRITEBYTECODE=1 \
    \
    # pip
    PIP_NO_CACHE_DIR=off \
    PIP_DISABLE_PIP_VERSION_CHECK=on \
    PIP_DEFAULT_TIMEOUT=100 \
    \
    # poetry
    # https://python-poetry.org/docs/configuration/#using-environment-variables
    # make poetry create the virtual environment in the project's root
    # it gets named `.venv`
    POETRY_VIRTUALENVS_IN_PROJECT=true \
    # do not ask any interactive question
    POETRY_NO_INTERACTION=1 \
    \
    # paths
    # this is where our requirements + virtual environment will live
    PYSETUP_PATH="/opt/pysetup" \
    VENV_PATH="/opt/pysetup/.venv"

# prepend venv to path
ENV PATH="$VENV_PATH/bin:$PATH"

# install poetry
# hadolint ignore=DL3018
RUN apk add --no-cache poetry build-base python3-dev

# copy project requirement files here to ensure they will be cached.
WORKDIR $PYSETUP_PATH
COPY poetry.lock pyproject.toml ./

# install deps - uses $POETRY_VIRTUALENVS_IN_PROJECT internally
RUN poetry install
# copy the rest of the app
COPY shortlinks shortlinks
COPY Makefile ./
RUN poetry run pyinstaller shortlinks/cli.py --onefile --name shortlinks

FROM base
COPY --from=builder /opt/pysetup/dist/shortlinks /usr/local/bin/shortlinks
CMD ["/usr/local/bin/shortlinks"]