diff --git a/oracle-java8/Dockerfile b/oracle-java8/Dockerfile
index 2d9946f..35a05f0 100644
--- a/oracle-java8/Dockerfile
+++ b/oracle-java8/Dockerfile
@@ -6,11 +6,13 @@
 #
 
 # Pull base image.
-FROM dockerfile/ubuntu
+FROM ubuntu
 
 # Install Java.
 RUN \
   echo oracle-java8-installer shared/accepted-oracle-license-v1-1 select true | debconf-set-selections && \
+  apt-get update && \
+  apt-get -qqy install software-properties-common python-software-properties && \
   add-apt-repository -y ppa:webupd8team/java && \
   apt-get update && \
   apt-get install -y oracle-java8-installer && \