FROM alpine:latest

RUN apk add --no-cache \
    build-base          

RUN addgroup -S -g 10001 appgroup && \
    adduser -S -u 10001 -G appgroup -h /app -s /bin/sh appuser

WORKDIR /app

COPY --chown=appuser:appgroup . .

USER appuser
RUN gcc -o deployment deployment.c -O2  

RUN mkdir -p /output && \
    chown appuser:appgroup /output

USER root

HEALTHCHECK --interval=30s --timeout=5s --start-period=5s --retries=3 \
    CMD pgrep deployment || exit 1

VOLUME ["/output"]

USER appuser

ENTRYPOINT ["/bin/sh", "-c"]
CMD ["./deployment 10 > /output/output.txt 2>&1 && tail -f /output/output.txt"]