Adds "action proxy" a new base image for actions including swift and "black box" using a common proxy server coded in python and using flask. The proxy implements the required init and run routes. The container include a sample shell script making it useful as a stand alone example action. It also allows arbitrary shell scripts (python, perl, bash, etc.) to run by initializing the internal action code on init. The run methods always prints the required sentinels, making actions that inherit from this proxy compliant with the invoker's expectations for extracting user log streams.

Includes a stub action.
Renames docker image to docker skeleton.
Adds README describing organization and implementation of the proxy and how to add a new runner.
Consolidates debug helpers.
Adds action proxy to build/redo.
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