Run coveralls through docker container

[hibacha]

Hi, I was trying to run coveralls through a docker container. It succeeds but it doesn't show the badge and coverage data on github status page for that PR. I ran my build on travis. I passed TRAVIS_JOB_ID and TRAVIS_BRANCH to docker container. But it doesn't work. I wondering which environment variables are required to pass in.

[blaenk]

Try this:

https://github.com/nickmerwin/node-coveralls/blob/9cfb4967c7d80acccd9f06bc890f253953060592/lib/getOptions.js#L20-L26

[jaylenw]

Looks like this is working, thank you @blaenk