Our self hosted gitlab service provides us with a private and secure environment for developing and testing our internal software. All of our dockerfiles, source code and configuration files for our infrastructure are stored here.
We are using Atom on many of our workstations to be able to have a configurable editor available. It's also provisioned to our Remote Desktops to be able to work with the same tools available as on the Workstations.
We are using Docker for a wide range of services. We are using Docker for our business applications on our Linux Servers. Our internal Web Services, our Databases, and our GitLab containers are running on docker.