Don't install jazzy on xenial (#95)
Don't install jazzy on xenial (#95)

Motivation:

Ubuntu 16 ruby is too old to support latest cocoapods gem.

Modifications:

Don't install jazzy when on xenial

Result:

Docker image will now build - you need to use bionic images to build documentation.
apple/swift-nio-extras,apple/swift-nio-extras,apple/swift-nio-extras,apple/swift-nio-extras