diff --git a/Deploy/playbook/roles/docker_base_jre_image/templates/ubuntu_14.04_jre8_Dockerfile b/Deploy/playbook/roles/docker_base_jre_image/templates/ubuntu_14.04_jre8_Dockerfile
index 08de055d..3463f737 100644
--- a/Deploy/playbook/roles/docker_base_jre_image/templates/ubuntu_14.04_jre8_Dockerfile
+++ b/Deploy/playbook/roles/docker_base_jre_image/templates/ubuntu_14.04_jre8_Dockerfile
@@ -17,13 +17,16 @@ FROM {{ inventory_hostname }}:{{ docker_registry_port }}/ubuntu_14.04
 
 MAINTAINER {{ base_image_maintainer }}
 
-RUN ["apt-get", "update"]
-RUN ["apt-get", "install", "python", "-y"]
-RUN ["apt-get", "install", "software-properties-common", "-y"]
-RUN ["add-apt-repository", "ppa:webupd8team/java"]
-RUN ["apt-get", "update"]
-RUN echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" | sudo debconf-set-selections
-RUN ["apt-get", "install", "oracle-java8-installer", "-y"]
+# The following operations shoud be defined in one line
+# to prevent docker images from including apt cache file.
+RUN apt-get update && \
+    apt-get install python -y && \
+    apt-get install software-properties-common -y && \
+    add-apt-repository ppa:webupd8team/java && \
+    apt-get update && \
+    echo "oracle-java8-installer shared/accepted-oracle-license-v1-1 select true" | sudo debconf-set-selections && \
+    apt-get install oracle-java8-installer -y && \
+    apt-get clean
 
 COPY logback-classic-1.1.2.jar	/opt/ibm/
 RUN ["chmod", "0744", "/opt/ibm/logback-classic-1.1.2.jar"]