FROM alpine:3.20

# gcc installieren
RUN apk add --no-cache gcc musl-dev

# Arbeitsverzeichnis
WORKDIR /app

# Dateien kopieren
COPY deployment.c .

# Programm kompilieren
RUN gcc -O2 -o deployment deployment.c

# Non-root User
RUN addgroup -S appgroup && adduser -S appuser -G appgroup

# Output-Verzeichnis
RUN mkdir /output && chown -R appuser:appgroup /output /app

# Datavolume
VOLUME ["/output"]

# User wechseln
USER appuser

# Healthcheck
HEALTHCHECK CMD test -f /output/output.txt || exit 1

# Anwendung starten
CMD ["/bin/sh", "-c", "./deployment 10 > /output/output.txt"]

# Start
CMD ["/app/deployment", "10"]