Merge pull request #1444 from pshipton/ubuntu-amazon

Pull the Ubuntu 22.04 image from Amazon instead of Dockerhub

buildenv/Dockerfile

@@ -20,7 +20,7 @@
 # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0 OR GPL-2.0-only WITH OpenJDK-assembly-exception-1.0
 #
 
-FROM ubuntu:22.04@sha256:6042500cf4b44023ea1894effe7890666b0c5c7871ed83a97c36c76ae560bb9b
+FROM public.ecr.aws/lts/ubuntu:22.04_stable@sha256:1582c29f34a48752e406f1a261fe9545fad895da3f6bb4be55bc82485557564e
 MAINTAINER openj9.bot <[email protected]>
 
 # Install basic requirementes from APT. Set up for SSH (including SSH login fix to prevent user being logged out), install and setup  virtualenv from pip3
@@ -49,4 +49,4 @@ EXPOSE 22
 CMD ["/usr/sbin/sshd", "-D"]
 # Create and set a working directory /docs
 RUN mkdir /docs
-WORKDIR /docs
+WORKDIR /docs