Move all Dockerfile samples to non-root user

Expected Behaviour

As an OpenFaaS end-user, I want to run all samples on my OpenFaaS cluster, even with the new non-root feature enabled.

Current Behaviour

The annotation value require-whisk-auth: false on a web action leads the controller to reject the web action invocation.

1. The openwhisk documentation does not say what should happen when the value is false. I don't know why this case is omitted case https://github.com/apache/openwhisk/blob/master/docs/webactions.md#securing-web-actions
2. The implementation treats this case as "not allowed

Feature Request

Add a --context flag to dispatch CLI.

Detailed Description

You can have multiple contexts in the dispatch config file (~/.dispatch/config.json). Each context stores the location of a dispatch endpoint. Currently, to switch context you need to do `dispatch manage context --set <context_

NB: Good first issue label (cannot be added because not in contributor list)

Exercise Reading error Messages - Lesson "Error and Exceptions"
(http://swcarpentry.github.io/python-novice-inflammation/09-errors/index.html)

• As dictionaries are not introduced previously in lesson (maybe a consequence of reducing the lesson) I suggest the following:

1. Moving this exercise at the end of th

Expected Behaviour

We should have Travis / Go & OpenFaaS GitHub badges in our README.md file just like openfaas/faas openfaas/faas-netes openfaas/faas-cli and etc.

Curren