From db3dfa6b4eb6b85ae03d12b256446d9719e53573 Mon Sep 17 00:00:00 2001
From: Johannes <meyerjo94774@th-nuernberg.de>
Date: Sat, 11 Apr 2026 19:55:18 +0000
Subject: [PATCH] swicht from debian-slim to alpine because of CI
 Vulnerabilities

---
 Dockerfile | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index e705c87..0f2a456 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,12 +3,10 @@
 # ============================================
 # Build Stage					
 # ============================================
-FROM debian:bookworm-slim AS build
+FROM alpine:3.20 AS build
 
-# Nur die benötigten Pakete installieren und danach Metadaten löschen die man nur für die INstallation braucht
-RUN apt-get update \
- && apt-get install -y --no-install-recommends gcc libc6-dev \
- && rm -rf /var/lib/apt/lists/*
+# Nur die benötigten Pakete installieren mit --no-chache
+RUN apk add --no-cache gcc musl-dev
 
 # WORKDIR setzen
 WORKDIR /app
@@ -22,18 +20,16 @@ RUN gcc -o deployment deployment.c
 # ============================================
 # Runtime Stage
 # ============================================
-FROM debian:bookworm-slim AS runtime
+FROM alpine:3.20 AS runtime
 
 # Curl für den HEALTHCHECK
-RUN apt-get update \
- && apt-get install -y --no-install-recommends curl \
- && rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache curl
 
 # Das output directory erstellen
 RUN mkdir -p /output
 
 # User ohne Root-Rechte erstellen
-RUN useradd -m app
+RUN adduser -D app
 
 # Der User app braucht die Rechte für den Ordner output
 RUN chown -R app:app /output
@@ -51,10 +47,11 @@ VOLUME ["/output"]
 USER app
 
 # Programm starten
-ENTRYPOINT ["/bin/bash", "-c"]
+ENTRYPOINT ["/bin/sh", "-c"]
 CMD ["./deployment 10 > /output/output.txt && tail -f /output/output.txt"]
 
 # prüfen ob output.txt existiert und aktualisiert wird
 HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
-  CMD test -f /output/output.txt && test $(find /output/output.txt -mmin -1) && echo "healthy" || exit 1
+  CMD [ -f /output/output.txt ] && \
+      [ $(find /output/output.txt -mmin -1 | wc -l) -gt 0 ] || exit 1