Build modified streamline images

The official image from streamline does not currently work for the arm64
platform. As a temporary measure, the source code and docker build scripts
have been lifted from the official images and are used to build locally.

Some additional modifications are made to reduce overall image size, these
are documented in docker/README.md

docker/streamline-src/public/elite/bower_components/bootstrap-extension/js/bootstrap-extension.min2.js

@@ -0,0 +1,11 @@
+/*!
+ * Bootstrap v3.3.7 (http://getbootstrap.com)
+ * Copyright 2011-2017 Twitter, Inc.
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ */
+
+/*!
+ * Generated using the Bootstrap Customizer (http://getbootstrap.com/customize/?id=0521992823f8075f420dad86a652e07e)
+ * Config saved to config.json and https://gist.github.com/0521992823f8075f420dad86a652e07e
+ */
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