FROM python:3.11.13-slim-bookworm
ARG OCR_VERSION=0.2.0
ARG BUILD_REVISION=unknown

LABEL resource.cpu.max="3" \
      resource.memory.max="5GiB"

ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    OCR_JOBS_DB="/data/jobs/jobs.db" \
    OCR_LOAD_ENGINE="1" \
    OCR_VERSION=${OCR_VERSION} \
    BUILD_REVISION=${BUILD_REVISION} \
    HOME="/opt/ocr-home"
LABEL org.opencontainers.image.version=${OCR_VERSION} \
      org.opencontainers.image.revision=${BUILD_REVISION}

RUN apt-get update \
    && apt-get install --yes --no-install-recommends libgl1 libglib2.0-0 libgomp1 \
    && rm -rf /var/lib/apt/lists/* \
    && groupadd --system ocr && useradd --system --gid ocr --home-dir /opt/ocr-home ocr \
    && mkdir -p /opt/ocr-home /data/jobs \
    && chown -R ocr:ocr /opt/ocr-home /data/jobs

WORKDIR /srv/ocr
COPY ocr-service/requirements.txt ./requirements.txt
RUN python -m pip install --no-cache-dir --requirement requirements.txt

COPY ocr-service/app ./app
USER ocr
RUN python -m app.models

VOLUME ["/data/jobs"]
EXPOSE 8000
HEALTHCHECK --interval=30s --timeout=5s --start-period=90s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:8000/health/ready', timeout=4)"

CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "1"]