FROM docker.io/debian:12-slim as base
ENV DEBIAN_FRONTEND=noninteractive
WORKDIR /app/

FROM base as build
RUN apt-get update                                \
    && apt-get install -y --no-install-recommends \
        ca-certificates                           \
        curl                                      \
    && rm -rf /var/lib/apt/lists/*
ARG APP="http://app.com/download"
RUN curl -L "$APP" | tar xz --strip-components=1

FROM base
COPY --from=build /app/ .
COPY entrypoint.sh /usr/local/bin/
RUN useradd -m app
VOLUME /config/
EXPOSE 80
ENTRYPOINT ["entrypoint.sh"]
CMD ["./app"]