diff --git a/debian.Dockerfile b/debian.Dockerfile
index 7897962..4ab3e3c 100644
--- a/debian.Dockerfile
+++ b/debian.Dockerfile
@@ -19,10 +19,9 @@ RUN set -x \
 #
 
 RUN set -x \
-	&& apt-get update && apt-get install -y --no-install-recommends ca-certificates curl && rm -rf /var/lib/apt/lists/* \
+	&& apt-get update && apt-get install -y --no-install-recommends ca-certificates curl && apt-get clean && rm -rf /var/lib/apt/lists/* \
 	&& curl -o /usr/local/bin/go-cron.gz -L https://github.com/prodrigestivill/go-cron/releases/download/$GOCRONVER/go-cron-$TARGETOS-$TARGETARCH.gz \
-	&& gzip -vnd /usr/local/bin/go-cron.gz && chmod a+x /usr/local/bin/go-cron \
-	&& apt-get purge -y --auto-remove ca-certificates && apt-get clean
+	&& gzip -vnd /usr/local/bin/go-cron.gz && chmod a+x /usr/local/bin/go-cron
 
 ENV POSTGRES_DB="**None**" \
     POSTGRES_DB_FILE="**None**" \