We run browsers in containers - all major kinds. We use remote desktop type software which we've integrated into our app to allow customers to access the containers running on our clusters. I.e. they use our web interface to connect to and interact with a running container.

I don't think that aspect of our stack has any serious problems - we haven't had to do much work on it since the functionality was first released. We have issues with things like proprietary browsers and limitations of mobile emulation.

I'll drop you an email.