diff --git a/build/Dockerfile b/build/Dockerfile
index 9585378..475c9f9 100644
--- a/build/Dockerfile
+++ b/build/Dockerfile
@@ -1,9 +1,12 @@
 FROM --platform=linux/x86_64 eclipse-temurin:11.0.20.1_1-jdk-focal
 RUN apt-get update \
+    && apt-get upgrade -y \
     && apt-get install -y unzip curl \
     && adduser --uid 1001 --home /home/sunbird/ --disabled-login sunbird \
     && mkdir -p /home/sunbird \
-    && chown -R sunbird:sunbird /home/sunbird
+    && chown -R sunbird:sunbird /home/sunbird \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
 RUN chown -R sunbird:sunbird /home/sunbird
 USER sunbird
 COPY ./target/sunbird-dial-service-1.0-SNAPSHOT-dist.zip /home/sunbird/