Dockerfile aktualisiert

Dockerfile

@@ -1,41 +1,34 @@
-# -----------------------
-# 1. BUILD STAGE
-# -----------------------
-FROM alpine:latest AS builder
+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
 
-
-# -----------------------
-# 2. RUNTIME STAGE
-# -----------------------
-FROM alpine:latest
-
-# Sicherheitsuser anlegen
+# Non-root User
 RUN addgroup -S appgroup && adduser -S appuser -G appgroup
 
-WORKDIR /app
-
-# nur Binary übernehmen
-COPY --from=builder /app/deployment /app/deployment
-
 # Output-Verzeichnis
 RUN mkdir /output && chown -R appuser:appgroup /output /app
 
-# Non-root User
-USER appuser
-
-# Volume für Ausgabe
+# Datavolume
 VOLUME ["/output"]
 
-# Healthcheck (angepasst an dein Programm)
-# Falls es nur einmal läuft: alternative prüfen (siehe Hinweis unten)
-HEALTHCHECK --interval=30s --timeout=3s \
-  CMD test -f /output/output.txt || exit 1
+# 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"]