new docker image and health

Dockerfile

@@ -1,5 +1,5 @@
 # Base-Image
-FROM alpine:latest
+FROM alpine:3.20
 
 # Pakete installieren
 RUN apk add --no-cache build-base gcc curl vim net-tools
@@ -23,6 +23,10 @@ VOLUME /output
 RUN adduser -D appuser
 USER appuser
 
+#health
+HEALTHCHECK --interval=5s --timeout=3s --retries=3 \
+  CMD pgrep deployment || exit 1
+
 # Ausgabe wird ins Container-Dateisystem geschrieben
 ENTRYPOINT ["/bin/bash", "-c"]
 CMD ["./deployment 10 > /output/output.txt && tail -f /output/output.txt"]