Dockerfile

FROM python:3.12-slim as python-base

LABEL maintainer="ALERT <alexey.rubasheff@gmail.com>"

ENV \
    BASE_DIR=/app \
    SOURCE_DIR_NAME=source

WORKDIR $BASE_DIR

ENV \
    # Python
    PYTHONUNBUFFERED=1 \
    PYTHONIOENCODING=utf-8 \
    LANG=en_US.UTF-8 \
    LANGUAGE=en_US.UTF-8 \
    # pip
    PIP_DISABLE_PIP_VERSION_CHECK=on \
    # poetry
    POETRY_HOME="$BASE_DIR/poetry" \
    POETRY_NO_INTERACTION=1 \
    POETRY_VIRTUALENVS_CREATE=false \
    # venv and requirements path
    VIRTUAL_ENV="$BASE_DIR/venv" \
    # cache path is HOME/.cache
    CACHE_PATH="/root/.cache" \
    SOURCE_PATH="$BASE_DIR/$SOURCE_DIR_NAME"

ENV PATH="$POETRY_HOME/bin:$VIRTUAL_ENV/bin:$PATH"

RUN python -m venv $VIRTUAL_ENV

ENV PYTHONPATH="$BASE_DIR:$PYTHONPATH"


FROM python-base as builder-base

RUN \
    apt-get update \
    && apt-get install -y curl --no-install-recommends \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

RUN --mount=type=cache,target=$CACHE_PATH \
    curl -sSL https://install.python-poetry.org | python -

WORKDIR $BASE_DIR

COPY poetry.lock pyproject.toml ./

RUN --mount=type=cache,target=$CACHE_PATH \
    poetry install --no-root --only main --compile


FROM builder-base as development

WORKDIR $BASE_DIR

RUN --mount=type=cache,target=$CACHE_PATH \
    poetry install --no-root --compile

CMD ["bash"]


FROM python-base as production

RUN \
    apt-get update \
    && apt-get install -y --no-install-recommends dumb-init \
    && apt-get clean \
    && rm -rf /var/lib/apt/lists/*

COPY --from=builder-base $POETRY_HOME $POETRY_HOME
COPY --from=builder-base $VIRTUAL_ENV $VIRTUAL_ENV

WORKDIR $BASE_DIR

COPY poetry.lock pyproject.toml ./
COPY $SOURCE_DIR_NAME ./$SOURCE_DIR_NAME/

VOLUME /data

ENTRYPOINT ["dumb-init", "--"]
CMD ["sh", "-c", "python -m $SOURCE_DIR_NAME"]