Dockerfile

FROM python:3.12-slim@sha256:80571b64ab7b94950d49d413f074e1932b65f6f75e0c34747b40ea41889a2ca9 AS base

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


# Export python requirements from poetry
FROM base AS poetry-export

ENV PATH=$PATH:/root/.local/bin POETRY_VERSION=1.8.3
RUN curl -sSL https://install.python-poetry.org | python -
COPY ./pyproject.toml ./pyproject.toml
COPY ./poetry.lock ./poetry.lock
RUN poetry export --no-interaction -o /requirements.txt --without-hashes --only main


# Install pip requirements
# This is needed to lower the size of the final image (no build dependencies)
FROM base AS requirements

# Install requirements
RUN apt-get update && apt-get install gcc python3-dev -y --no-install-recommends
COPY --from=poetry-export requirements.txt /requirements.txt
RUN pip install -r /requirements.txt


# Copy source code
# This is done in a separate stage to squash layers into one
FROM base AS source

RUN mkdir -p /app
WORKDIR /app
COPY pinger /app/pinger
COPY pyproject.toml /app
COPY README.md /app/README.md


# Remove apt files
FROM base AS pre-final

RUN rm -rf /var/lib/apt/lists/* \
  && apt-get clean


# Final image
FROM scratch AS final

LABEL org.opencontainers.image.source=https://github.com/D0Nater/PingerBot

COPY --from=pre-final / /

WORKDIR /app

ENV MODE=app

COPY --from=requirements /usr/local/lib/python3.12/site-packages /usr/local/lib/python3.12/site-packages
COPY --from=source /app /app
RUN pip install -e /app

CMD ["python", "-m", "pinger"]