New DNS option to start the docker container with
Update run.js

fixed: if you create a new project, use the docker runner and never set the dns option, executing a test crashed
Update run.js

switched to if statement to not alter the default. Added a small/basic check to only accept a dns value with at least 7 characters.
Merge pull request #20 from peaksandpies/master

New DNS option to start the docker container with