Using Bollard 0.19.x meant that network stats weren't being recorded correctly. Updated local unhealthy container to use a speed test in order to check for network IO.
stderr output is added to logs, merges #49, also add stderr output to Dockerfile.unhealthy
Highlight an unhealthy container in Orange, and display "! running" as the state, refactor: Move dev Docker files to docker directory
Jack Wills