diff --git a/skib_application_dockerfile.txt b/skib_application_dockerfile.txt
index 63dedba..010e745 100644
--- a/skib_application_dockerfile.txt
+++ b/skib_application_dockerfile.txt
@@ -1,6 +1,8 @@
-FROM erseco/alpine-php-webserver:3.20.5
-
 ARG VERSION
+ARG SUPERCRONIC_VERSION=0.2.33
+ARG PHP_IMAGE_VERSION=3.20.5
+
+FROM erseco/alpine-php-webserver:${PHP_IMAGE_VERSION}
 
 LABEL version="${VERSION}" \
     Maintainer="H2 invent GmbH" \
@@ -27,8 +29,8 @@ RUN apk --no-cache add \
 RUN sed -i 's/^date.timezone=.*$/date.timezone="Europe\/Berlin"/' /etc/php83/conf.d/custom.ini
 RUN echo "Europe/Berlin" > /etc/timezone
 
-RUN wget https://github.com/aptible/supercronic/releases/download/v0.2.33/supercronic-linux-amd64 -O /supercronic \
-    && chmod +x /supercronic
+RUN wget https://github.com/aptible/supercronic/releases/download/v${SUPERCRONIC_VERSION}/supercronic-linux-amd64 -O /supercronic \
+    && chmod +x /supercroni
 
 RUN wget https://git.h2-invent.com/Public-System-Design/Public-Helperscripts/raw/branch/main/distributed_cron.sh -O /distributed_cron.sh \
     && chmod +x /distributed_cron.sh