Merge pull request #105 from aws/update_ubuntu_base

Update Ubuntu base image

Author: NikhilRaverkar

docker/0.23-1/base/Dockerfile.cpu

@@ -1,5 +1,5 @@
 ARG UBUNTU_VERSION=18.04
-ARG UBUNTU_IMAGE_DIGEST=fc0d6af5ab38dab33aa53643c4c4b312c6cd1f044c1a2229b2743b252b9689fc
+ARG UBUNTU_IMAGE_DIGEST=98706f0f213dbd440021993a82d2f70451a73698315370ae8615cc468ac06624
 
 FROM ubuntu:${UBUNTU_VERSION}@sha256:${UBUNTU_IMAGE_DIGEST}