Restrict Docker images that can be used for build or service containers

Problem Definition

At the moment, there is no way to restrict the Docker image that is used in the bitbucket-pipelines.yml file either for the build container or for service containers.

Some admins would like to restrict which Docker images can be used in the bitbucket-pipelines.yml file for security reasons.

Suggested Solution

The preferable way would be to provide a setting for allowed images either in the Repository settings or in Workspace settings, so that developers who are not admins cannot override it.