Docker for Banking industry

I have been using Docker for a while and now that, requirement has arised around whether this is feasible option for Banking sector. I agree, Goldman Sachs invests around $1 billion with Docker. But on the usability and realtime scenario perspective, banking sector will have lot of servers around. Having Docker in there would’t create higgledy–piggledy situation out there ? Note that, Banks are primarily talking about security factor on top of everything/anything. I request forum members thoughts from their experience.

Thanks in advance.