# news-digest — base image for two containers in this stack:
#
#   news-digest-worker — runs alpine's busybox crond + the one-shot
#                        digest.py per fire (default ENTRYPOINT).
#   news-digest-web    — runs uvicorn web:app (overridden in compose)
#                        to serve /output as static + the tiny
#                        hidden-items API at /api/*.
#
# Single image, two roles selected via compose `command:`.
# Bind-mounted /output is the shared canvas: worker writes HTML, web
# serves it.

FROM python:3.12-alpine

ENV PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1 \
    PIP_DISABLE_PIP_VERSION_CHECK=1

# tzdata so $TZ works for cron + datetime; tini so signals propagate cleanly.
RUN apk add --no-cache tzdata tini bash curl

# fastapi + uvicorn[standard] for the web container; requests + jinja2
# for the worker. Both shipped in both containers — neither set is
# heavy enough to justify splitting the image.
# trafilatura: main-content extractor for the article-summary upgrade
# (worker only — it pulls lxml + a handful of HTML utils, ~80 MB total).
# libxml2-dev/libxslt-dev are for lxml's musl wheels. apk caches are
# cleaned in the same RUN to keep the layer small.
RUN apk add --no-cache --virtual .build-deps gcc musl-dev libxml2-dev libxslt-dev \
    && apk add --no-cache libxml2 libxslt \
    && pip install --no-cache-dir \
        requests jinja2 trafilatura \
        'fastapi>=0.115' 'uvicorn[standard]>=0.30' \
    && apk del .build-deps

WORKDIR /app
COPY digest.py /app/digest.py
COPY seed-headlines.py /app/seed-headlines.py
COPY web.py /app/web.py
COPY templates /app/templates
COPY entrypoint.sh /usr/local/bin/entrypoint.sh
COPY run-digest.sh /usr/local/bin/run-digest.sh
COPY crontab /etc/crontabs/root
RUN chmod +x /usr/local/bin/entrypoint.sh /usr/local/bin/run-digest.sh

# Sentinel + first-run output dir
VOLUME /output

# Default ENTRYPOINT runs the worker (cron). The web container in
# compose overrides both entrypoint and command to launch uvicorn.
ENTRYPOINT ["/sbin/tini", "--", "/usr/local/bin/entrypoint.sh"]