Add the builder folder to the open source code base

It should have been part of []

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=234036893

builder/Dockerfile

@@ -0,0 +1,27 @@
+# This Dockerfile builds an image that can be used to build the nomulus app.
+# We need the following programs during Gradle build:
+# 1. Java 8 for compilation.
+# 2. Node.js/NPM for JavaScript compilation.
+# 3. Google Cloud SDK for generating the WARs.
+# TODO: We should probably combine multile RUN statments into one so that only
+# one layer is produced, but separating them makes it easier to experiment, as
+# previous layers are cached. When we settle on the content, consider merging
+# the RUNs.
+FROM gcr.io/gcp-runtimes/ubuntu_16_0_4
+ENV DEBIAN_FRONTEND noninteractive
+RUN apt-get update && apt-get install apt-utils -y && apt-get upgrade -y
+RUN apt-get install -y locales lsb-release
+# Cribbed from https://hub.docker.com/_/ubuntu
+RUN localedef -i en_US -c -f UTF-8 -A /usr/share/locale/locale.alias en_US.UTF-8
+ENV LANG en_US.utf8
+RUN apt-get install openjdk-8-jdk-headless -y
+RUN apt-get install npm -y
+# Cribbed from https://cloud.google.com/sdk/docs/quickstart-debian-ubuntu
+RUN export CLOUD_SDK_REPO="cloud-sdk-$(lsb_release -c -s)" && \
+    echo "deb http://packages.cloud.google.com/apt $CLOUD_SDK_REPO main" \
+    | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list && \
+    curl https://packages.cloud.google.com/apt/doc/apt-key.gpg \
+    | apt-key add - && apt-get update -y
+RUN apt-get install google-cloud-sdk-app-engine-java -y
+RUN apt-get remove apt-utils locales lsb-release -y && \
+    apt-get autoclean -y && apt-get autoremove -y && rm -rf /var/lib/apt/lists/*