Issue running the test in Travis

When I try to run BackstopJS on Travis I get the following error
```COMMAND | Command "test" ended with an error after [123.752s]
COMMAND | Error: docker run --rm -it --mount type=bind,source="/home/travis/build/design-system",target=/src backstopjs/backstopjs:4.1.9 test "--moby" "--config=tools/backstop/backstop.json" returned 1
at ChildProcess. (/home/travis/build/design-system/node_modules/backstopjs/core/util/runDocker.js:50:18)
at emitTwo (events.js:126:13)
at ChildProcess.emit (events.js:214:7)
at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
```

Full output here https://gist.github.com/lifeofmle/f72f2b0d69238ed178acc5d8c5533b6f

Here is my config file
https://gist.github.com/lifeofmle/7e87e0f5b0e2ebf3a275812ce22b8670

It works when I run the command locally.

I don't know how I can debug this issue further