Currently it is only possible to use a ready to pull image for a Docker Runner in Bamboo. Other CI platforms like Jenkins, Drone.io or CircleCI have a feature to first build an image that will be used as a build environment in form of a running container.

This way a user:

• can have environment definition in Git
• can test any changes to build env this way
• may not worry about Docker registry, since this will be a trow away image