# Base-Imagee
FROM alpine:latest AS builder

# Pakete installieren
RUN apk add --no-cache build-base gcc

# Arbeitsverzeichnis setzen
WORKDIR /app

# alles kopieren
COPY . .

# Code kompilieren
RUN gcc -static -o deployment deployment.c

FROM alpine:latest
RUN apk upgrade --no-cache

RUN addgroup -S appgroup && adduser -S appuser -G appgroup

# Arbeitsverzeichnis setzen
WORKDIR /app

COPY --from=builder /app/deployment .

# Verzeichnis für Ausgabe anlegen
RUN mkdir /output && chown appuser:appgroup /output

VOLUME ["/output"]

USER appuser

HEALTHCHECK --interval=30s --timeout=5s --start-period=15s --retries=3 \
    CMD test -f /output/output.txt || exit 1

# Ausgabe wird ins Container-Dateisystem geschrieben
ENTRYPOINT ["/bin/sh", "-c"]
CMD ["./deployment 10 > /output/output.txt && tail -f /output/output.txt"]