diff --git a/docker-build/Dockerfile b/docker-build/Dockerfile
index be4b1b3..5dcefad 100755
--- a/docker-build/Dockerfile
+++ b/docker-build/Dockerfile
@@ -10,12 +10,13 @@ RUN apk update && \
 FROM php:8.3.9-apache
 WORKDIR /var/www/html
 
-RUN apt-get update -y && \
+RUN apt-get update && \
     apt-get upgrade -y && \
-    apt-get install -y --no-install-recommends && \
+    apt-get install --no-install-recommends -y \
       libxml2-dev && \
     docker-php-ext-install soap && \
-    apt-get clean -y
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/*
 
 COPY --chown=www-data:www-data --from=0 /clone-workspace/ownDynDNS /var/www/html
 COPY --chown=www-data:www-data --from=0 /clone-workspace/ownDynDNS/.htaccess.example /var/www/html/.htaccess