Dockerfile

# Can't use "python:3.7-slim". OpenJDK Java below fails to install with it.
FROM python:3.7

ENV PIP_DISABLE_PIP_VERSION_CHECK=1
ENV PIP_NO_CACHE_DIR=1

ENV UPLOAD_PATH='/uploads'
ENV SESSION_COOKIE_SECRET_KEY="change me secret"

COPY /requirements.txt /
RUN set -eux; \
    pip install -r requirements.txt
COPY /app /app/app
RUN set -eux; \
    mkdir $UPLOAD_PATH; \
    python app/app --help  # smoke test

# Install Java for Naisc
# If someday this is not required, use a slimmer "FROM" image above.
RUN set -eux; \
    apt-get update && apt-get -y install --no-install-recommends openjdk-11-jre; \
    java --version; \
    rm -rf /var/lib/apt/lists/*

WORKDIR /app
EXPOSE 8000
VOLUME $UPLOAD_PATH

ENTRYPOINT ["python", "app"]
CMD ["deploy"]
HEALTHCHECK --interval=5m --timeout=3s \
    CMD python -c 'import httpx as r; r.get("http://localhost:8000").raise_for_status()'