Unable to start Phantom JS inside a Docker container

I’m unable to start PhantomJS inside a Docker container inside CircleCI. I’m not sure what’s different about CircleCI, but these tests work fine on my local machine. On CircleCI, this is the output from running my tests:

13 07 2017 00:56:19.092:INFO [karma]: Karma v1.5.0 server started at http://0.0.0.0:9876/
13 07 2017 00:56:19.094:INFO [launcher]: Launching browser PhantomJS with unlimited concurrency
13 07 2017 00:56:19.148:INFO [launcher]: Starting browser PhantomJS
13 07 2017 00:57:19.158:WARN [launcher]: PhantomJS have not captured in 60000 ms, killing.
13 07 2017 00:57:21.161:WARN [launcher]: PhantomJS was not killed in 2000 ms, sending SIGKILL.
13 07 2017 00:57:23.164:WARN [launcher]: PhantomJS was not killed by SIGKILL in 2000 ms, continuing.

Which container are you using?

Sorry for the slow reply. I’ve been on vacation the last few days. This is for the edison-ui container (private).