Dockerfile.requirements

# syntax=docker/dockerfile:1.3

# BUILD STAGE - Download dependencies
FROM            python:3.12-alpine3.21 as build

RUN             apk update \
                && apk upgrade --no-cache \
                && apk add --update --no-cache \
                git \
                openssh \
                postgresql-dev \
                musl-dev \
                libxslt-dev \
                python3-dev \
                libffi-dev \
                gcc \
                libcurl \
                bash \
                rust \
                build-base \
                cargo \
                curl-dev \
                && pip install --upgrade 'pip>=26.1.2' setuptools

COPY            requirements.txt /
WORKDIR         /pip-packages/

RUN             pip wheel -r /requirements.txt

# RUNTIME STAGE - Copy packages from build stage and install runtime dependencies
FROM            python:3.12-alpine3.21

RUN             apk update && apk upgrade --no-cache \
                && apk add --no-cache postgresql-libs \
                && apk add --no-cache --virtual .build-deps \
                gcc \
                musl-dev \
                postgresql-dev \
                libxslt-dev \
                python3-dev \
                build-base \
                libffi-dev \
                openssl-dev \
                make \
                curl-dev \
                libcurl

WORKDIR         /pip-packages/
COPY            --from=build /pip-packages/ /pip-packages/

RUN             rm -rf /pip-packages/src \
                && pip install --no-deps --no-index --find-links=/pip-packages/ /pip-packages/* \
                && pip install --upgrade 'setuptools>=82' 'pip>=26.1.2' --break-system-packages \
                && rm -rf /usr/local/lib/python3.12/ensurepip/_bundled/pip-*.whl \
                && apk del .build-deps

# expat must be upgraded after .build-deps removal; see alpine#15709
RUN             apk add --upgrade expat