# Custom CI image for the arm64 (Raspberry Pi) Gitea Actions runner.
#
# The official sagemath/sagemath image is amd64-only; conda-forge's `sage`
# package is the one place SageMath is actually published for linux-aarch64,
# so this bakes it (plus the lint/test tools) into a single image, built and
# pushed once rather than reinstalled on every CI run.
#
# Build & push (run directly on the Pi, or any arm64 machine with Docker):
#   docker build -t gitea.piribauer.ch/julian/sage-ci:latest -f .gitea/ci-image/Dockerfile .
#   docker login gitea.piribauer.ch -u julian
#   docker push gitea.piribauer.ch/julian/sage-ci:latest
#
# Rebuild and re-push whenever this Dockerfile changes (e.g. bumping the sage
# version) or the pinned tool versions need updating.

FROM condaforge/miniforge3:latest

RUN mamba install -y -c conda-forge sage ruff pytest \
    && mamba clean -afy

# actions/checkout@v4 (and other JS-based actions) run via `node` inside this
# container -- act_runner doesn't inject a runtime of its own when a custom
# `container:` image is set, so one has to be present here.
RUN mamba install -y -c conda-forge nodejs \
    && mamba clean -afy

WORKDIR /workspace